Roger Collins: berrikuspenen arteko aldeak

* ''Early Medieval Spain: Unity in Diversity, 400–1000400–1000'' ([[Londres]]: Macmillans, [[1983]])

* ''The Basques'' ([[Oxford]]: Blackwell, [[1986]])

* ''The Arab Conquest of Spain, 710–797710–797'' ([[Oxford]]: Blackwell, [[1989]])

* ''Early Medieval Europe, 300–1000300–1000'' ([[Londres]]: Macmillans, [[1991]])

* ''Law, Culture and Regionalism in Early Medieval Spain'' ([[Aldershot]]: Variorum, [[1992]])

* ''Bede's Ecclesiastical History: Introduction and notes, together with translations of Bede's Letter to Egbert and his Greater Chronicle'' ([[Oxford]]: Oxford University Press, [[1994]]), Judith McClureekin batera.

* ''Fredegar'' ([[Aldershot]]: Variorum, [[1996]])

* ''Oxford Archaeological Guide to Spain'' ([[Oxford]]: Oxford University Press, [[1998]])

* ''Charlemagne'' ([[Londres]]: Macmillans, [[1998]])

* ''Visigothic Spain, 409–711409–711'' ([[Oxford]]: Blackwell, [[2004]])

* ''Ideal and Reality in Frankish and Anglo-Saxon Society: Studies presented to Professor J.M. Wallace-Hadrill'' ([[Oxford]]: Blackwell, [[1983]]), Patrick Wormald eta Donald Bulloughekin batera.

* ''Charlemagne's Heir: New Approaches to the Reign of Louis the Pious'' ([[Oxford]]: Oxford University Press, [[1990]]), Peter Godmanekin batera

* ''Medieval Spain: Culture, Conflict and Coexistence'' ([[Basingstoke]] eta [[New York]]: Palgrave-Macmillan, [[2002]]), Anthony Goodmanekin batera.

* ''Keepers of the Keys of Heaven: A History of the Papacy'' ([[New York]]: Basic Books [[2009]])

== Erreferentziak ==