APA (7th ed.) Zitazioa
O'Callaghan, J. F. (2004). Reconquest and crusade in medieval Spain (1st pbk. ed.). University of Pennsylvania Press.
Chicago Style (17th ed.) Zitazioa
O'Callaghan, Joseph F. Reconquest and Crusade in Medieval Spain. 1st pbk. ed. Philadelphia [Pa.]: University of Pennsylvania Press, 2004.
MLA (9th ed.) Zitazioa
O'Callaghan, Joseph F. Reconquest and Crusade in Medieval Spain. 1st pbk. ed. University of Pennsylvania Press, 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.