Barber, M. (2010) The challenge of state building in the twelfth century: the crusader states in Palestine and Syria. Reading Medieval Studies, XXXVI. pp. 7-22. ISSN 0950-3129

Barber, M. (2008) Was the Holy Land betrayed in 1291? Reading Medieval Studies, XXXIV. pp. 35-52. ISSN 0950-3129

Barber, M. C. (2005) The Templar preceptory of Douzens (Aude) in the twelfth century. In: Bull, M. and Leglu, C. E. (eds.) The world of Eleanor of Aquitaine: literature and society in southern France between the eleventh and thirteenth centuries. Boydell & Brewer, Woodbridge, UK, pp. 37-55. ISBN 9781843831143

Barber, M. C. (2005) The impact of the Fourth Crusade in the west: the distribution of relics after 1204. In: Laiou, A.E. (ed.) Urbs capta: the Fourth Crusade and its consequences / Urbs capta : la IVe croisade et ses conséquences. Realités Byzantines (10). Lethielleux, Paris, France, pp. 325-334. ISBN 9782283604649

Barber, M. (2004) Katarzy. Pantstwowy Instytut Wydawniczy, Warsaw, Poland, pp248. ISBN 8306029232

Barber, M. (2004) La Storia dei Templari. Piemme, Casale Monferrato. ISBN 9788838410208

Barber, M. (2004) The two cities: medieval Europe 1050-1320. 2nd edition. Routledge, London. ISBN 9780415174152

Barber, M. (2003) Die Katharer: Ketzer des Mittelalters. Artemis and Winkler, Germany, pp375. ISBN 9783538071643

Barber, M. (2003) The career of Philip of Nablus in the kingdom of Jerusalem. In: Edbury, P. and Phillips, J. (eds.) The experience of crusading: defining the crusader kingdom. Cambridge University Press, UK, pp. 60-75. ISBN 9780521781510

Ailes, M. and Barber, M., eds. (2003) The history of the Holy War: Ambroise's Estoire de la Guerre Sainte. Volume 1. The Boydell Press, UK.

Ailes, M. and Barber, M., eds. (2003) The history of the Holy War: Ambroise's Estoire de la Guerre Sainte. Volume 2. The Boydell Press, UK. ISBN 9781843830016

Barber, M. (2003) The trial of the Templars. Folio Society, London.