• Agustino, S., Mataya, B., Senelwa, K. and Achigan-Dako, G.E. 2011. Non-wood forest products and services for socio-economic development, a compendium for technical and professional forestry education. Nairobi, Kenya: The African Forest Forum.
• Angelsen, A., Jagger, P., Babigumira, R., Belcher, B., Hogarth, N.J., Bauch, S., Borner, J. and Smith-Hall, C. 2014. Environmental income and rural livelihoods: a global-comparative analysis. World Development 64: 12 – 28.
• Angelsen, A. and Lund, J.F. 2011. Designing the household questionnaire. In: Measuring livelihoods and environmental dependence, methods for research and fieldwork, eds. A. Angelsen, H.O. Larsen, J.F. Lund, C. Smith-Hall and S. Wunder, 107-126. Oxford, Earthscan Publications.
• Asiedu, R. and Sartie, A. 2010. Crops that feed the world. Yams for income and food security. Food Security 2: 305 – 315.
• Bakkegaard, R.K., Hogarth, N.J., Bong, I.W., Bosselmann, A.S. and Wunder, S. 2017. Measuring forest and wild product contributions to household welfare: Testing a scalable household survey instrument in Indonesia. Forest Policy and Economics 84: 20–28.
• Baudeon, F., Mwanza., H. M., Triomphe, B. and Bwalya, M. 2007. Conservation agriculture in Zambia: a case study of Southern Province. Nairobi, Kenya: African Conservation Tillage Network, Centre de Coopération Internationale de Recherche Agronomique pour le Développement, Food and Agriculture Organization of the United Nations.
• Bharucha, Z. and Pretty, J. 2010. The roles and values of wild foods in agricultural systems. Philosophical Transactions of the Royal Society B, 365: 2913–2926.
• Cavendish, W. 2000. Empirical regularities in the poverty-environment relationship of rural households: Evidence from Zimbabwe. World Development, 28: 1979–2003.
• Central Statistical Office. 2012. 2010 Census of population and housing. National Analytic Report, 1–117. Lusaka, Zambia: Central Statistical Office. Retrieved November, 27, 2017, from: http://www.zamstats.gov.zm/census/cen.html
• Central Statistical Office. 2015. 2015 Living conditions monitoring survey report. Lusaka, Zambia: Central Statistical Office. Retrieved November, 27, 2017, from: https://www.zamstats.gov.zm/phocadownload/Living_Conditions/2015%20Living%20Conditions%20Monitoring%20Survey%20Report.pdf
• Fern, K. 2018. Tropical plants database. Retrieved July, 16, 2018, from: tropical.theferns.info
• Forestry Department. 2016. Measuring the informal forest-based economy as part of the national forest monitoring and assessment, Integrated Land Use Assessment Phase II - Technical paper 6. Lusaka, Zambia: Ministry of Lands Natural Resources and Environmental Protection, and Rome, Italy: Food and Agricultural Organization of the United Nations, and Finland: Ministry of Foreign Affairs.
• Hachigonta, S., Reason, C.J.C. and Tadross, M. 2008. An analysis of onset date and rainy season duration over Zambia. Theoretical and Applied Climatology 91: 229 – 243.
• Hardin, G. 1968. The tragedy of the commons. Science 162:1243-1248.
• Heubach, K., Wittig, R., Nuppenau, E-A. and Hahn, K. 2011. The economic importance of non-timber forest products (NTFPs) for livelihood maintenance of rural west African communities: A case study from northern Benin. Ecological Economics 70: 1991–2001.
• Ile, E.I., Craufurd, P.Q., Battey, N.H. and Asiedu, R. 2006. Phases of dormancy in yam tubers (Dioscorea rotundata). Annals of Botany 97: 497–504.
• Kalaba, F.K., Quinn, C.H. and Dougill, A.J. 2013. Contribution of forest provisioning ecosystem services to rural livelihoods in the miombo woodlands of Zambia. Population and Environment 35: 159–182.
• Kiptot, E. and Franzel, S. 2012. Gender and agroforestry in Africa: A review of women’s participation. Agroforestry Systems 84: 35–58.
• Krejcie, R.V. and Morgan, D.W. 1970. Determining sample size for research activities. Educational and Psychological Measurement 30: 607-610.
• Kumar, S., Das, G., Shin., H-S. and Patra, J.K. 2017. Dioscorea species (a wild edible tuber): A study on its ethnopharmacological potential and traditional use by the local people of Similipal Biosphere Reserve, India. Frontiers in Pharmacology 8: 52.
• Majule, A.E., Liwenga, E.T. and Ndangalasi, H.J. 2010. Socio-economics of non-wood food forest products to the community in the southern coastal areas of Tanzania. Revista Română de Geografie Politică Year XII 2: 309 – 328.
• Mamo, G., Sjaastad, E.and Vedeld, P. 2007. Economic dependence on forest resources: A case from Dendi district, Ethiopia. Forest Policy and Economics 9: 916–927.
• Mukosha, J. and Siampale, A. 2009. Integrated land use assessment Zambia 2005–2008. Lusaka, Zambia: Ministry of Tourism, Environment and Natural Resources, Forestry Department, and Rome, Italy: Food and Agriculture Organization of the United Nations.
• Mulolwa, A. 2006. Demystifying customary tenure in Zambia, 1–12. Promoting land administration and good governance. 5th FIG Regional Conference, Accra, Ghana, March 8-11, 2006.
• Muliokela, S. W. 1995. Zambia seed technology handbook. Lusaka, Zambia: Ministry of Agriculture, Food and Fisheries.
• Murali, K.S., Shankar, U., Shaanker, R.U., Ganeshaiah, K.N. and Bawa, K.S. 1996. Extraction of non-timber forest products in the forests of Biligiri Rangan Hills, India. 2. Impact of NTFP extraction on regeneration, population structure, and species composition. Economic Botany 50: 252-269.
• Ouarghidi, A., Powell, B., Martin, G.J. and Abbad, A. 2017. Traditional sustainable harvesting knowledge and distribution of a vulnerable wild medicinal root (A. pyrethrum var. pyrethrum) in Ait M’hamed Valley, Morocco. Economic Botany 71: 83-95.
• Padulosi, S., Thompson, J. and Rudebjer, P. 2013. Fighting poverty, hunger and malnutrition with neglected and underutilized species (NUS): needs, challenges and the way forward. Rome, Italy: Bioversity International.
• Paumgarten, F. and Shackleton, C.M. 2009. Wealth differentiation in household use and trade in non-timber forest products in South Africa. Ecological Economics 68: 2950–2959.
• RBG Kew. 2016. The State of the World’s Plants Report – 2016. London: Royal Botanic Gardens, Kew.
• Poornima, G.N. and Ravishankar, R.V. 2009. Evaluation of phytonutrients and vitamin contents in a wild yam, Dioscorea belophylla (Prain) Haines. African Journal of Biotechnology 8: 971 – 973.
• Shackleton, C., Delang, C.O., Shackleton, S. and Shanley, P. 2011. Non-timber forest products: concept and definitions. In: Non-timber forest products in the global context, eds. S. Shackleton, C. Shackleton and P. Shanley, 3-21. Heidelberg, Springer-Verlag.
• Shackleton, C.M. and Shackleton, S.E. 2004. The importance of non-timber forest products in rural livelihood security and as safety nets: a review of evidence from South Africa. South African Journal of Science 100: 658–664.
• Sheldon, K. 2017. African Women: Early History to the 21st Century. Bloomington, Indiana: Indiana University Press.
• Shelef, O., Weisberg, P.J. and Provenza, F.D. 2017. The value of native plants and local production in an era of global agriculture. Frontiers in Plant Science 8: 2069.
• Shitumbanuma, V., Tembo, F., Tembo, J.M., Chilala S. and van Ranst, E. 2007. Dental fluorosis associated with drinking water from hot springs in Choma district in southern province, Zambia. Environmental Geochemistry and Health 29: 51–58.
• Speybroeck, N., Madder, M., van den Bossche, P., Mtambo, J., Berkvens, N., Chaka, G., Mulumba, M., Brandt, J., Tirry L.and Berkvens D. 2002. Distribution and phenology of ixodid ticks in southern Zambia. Medical and Veterinary Entomology 16: 430–441.
• Sunderland, T., Achdiawan, R., Angelsen, A., Babigumira, R., Ickowitz, A., Paumgarten, F., Reyes-García, V. and Shively, G. 2014. Challenging perceptions about men, women, and forest product use: a global comparative study. World Development 64: S56-S66.
• Tiffen, M. and Mulele, M.R. 1994. The environmental impact of 1991 – 92 drought on Zambia. Gland, Switzerland: IUCN.
• Timko, J., Waeber, P. and Kozak, R. 2010. The socio-economic contribution of non-timber forest products to rural livelihoods in Sub-Saharan Africa: knowledge gaps and new directions. International Forestry Review 12: 284–294.
• Tschakert, P., Coomes, O. T. and Potvin, C. 2007. Indigenous livelihoods, slash-and-burn agriculture, and carbon stocks in Eastern Panama. Ecological Economics 60: 807–820.
• van den Boog, T., van Andel, T. and Bulkan, J. 2017. Indigenous children’s knowledge about non-timber forest products in Suriname. Economic Botany 71: 361-373.
• Vinya, R., Syampungani, S., Kasumu, E., Monde C. and Kasubika, R. 2011. Preliminary study on the drivers of deforestation and potential for REDD+ in Zambia. A consultancy report prepared for the Forestry Department and FAO under the National UN-REDD+ Programme. Lusaka, Zambia: Ministry of Lands & Natural Resources.
• Wilkin, P. 2001. Dioscoreaceae of south-central Africa. Kew Bulletin 56:361–404.