- Early medieval Europe, 300-1000Roger Collins
- Early Medieval Spain (New Studies in Medieval History)Roger Collins, Roger Collins
- Keepers of the Keys of HeavenRoger Collins
- CharlemagneRoger Collins
- Arab Conquest of SpainRoger Collins
- Visigothic Spain 409-711 (A History of Spain)Roger Collins, ROGER COLLINS et al.
- The Arab conquest of Spain, 710-797Roger Collins
- The BasquesRoger Collins
- Charlemagne's heirPeter Godman, Roger Collins
- La España Visigoda. Historia De España III (Serie Mayor)Roger Collins
- Law, culture, and regionalism in early medieval SpainRoger Collins
- Califas y reyesRoger Collins
- Gregory the GreatCarole Ellen Straw, Carole Straw et al.
