Cita APA (7a ed.)

Collins, R. (1983). Early medieval Spain: Unity in diversity, 400-1000. MacMillan.

Cita Chicago Style (17a ed.)

Collins, Roger. Early Medieval Spain: Unity in Diversity, 400-1000. London [etc.]: MacMillan, 1983.

Cita MLA (9a ed.)

Collins, Roger. Early Medieval Spain: Unity in Diversity, 400-1000. MacMillan, 1983.