Style de citation APA (7e éd.)

O'Callaghan, J. F. (2004). Reconquest and crusade in medieval Spain (1st pbk. ed.). University of Pennsylvania Press.

Style de citation Chicago (17e éd.)

O'Callaghan, Joseph F. Reconquest and Crusade in Medieval Spain. 1st pbk. ed. Philadelphia [Pa.]: University of Pennsylvania Press, 2004.

Style de citation MLA (9e éd.)

O'Callaghan, Joseph F. Reconquest and Crusade in Medieval Spain. 1st pbk. ed. University of Pennsylvania Press, 2004.