O'Callaghan, J. F. (2004). Reconquest and crusade in medieval Spain (1st pbk. ed.). University of Pennsylvania Press.
芝加哥风格引文O'Callaghan, Joseph F. Reconquest and Crusade in Medieval Spain. 1st pbk. ed. Philadelphia [Pa.]: University of Pennsylvania Press, 2004.
MLA引文O'Callaghan, Joseph F. Reconquest and Crusade in Medieval Spain. 1st pbk. ed. University of Pennsylvania Press, 2004.
警告：这些引文格式不一定是100％准确.