APA (7th ed.) Citation

O'Callaghan, J. F. (2003). Reconquest and crusade in medieval Spain. University of Pennsylvania Press.

Chicago Style (17th ed.) Citation

O'Callaghan, Joseph F. Reconquest and Crusade in Medieval Spain. Philadelphia: University of Pennsylvania Press, 2003.

MLA (8th ed.) Citation

O'Callaghan, Joseph F. Reconquest and Crusade in Medieval Spain. University of Pennsylvania Press, 2003.

Warning: These citations may not always be 100% accurate.