O'Callaghan, J. F. (2011). The Gibraltar crusade: Castile and the battle for the Strait. University of Pennsylvania Press.
Chicago Style (17th ed.) CitationO'Callaghan, Joseph F. The Gibraltar Crusade: Castile and the Battle for the Strait. Philadelphia: University of Pennsylvania Press, 2011.
MLA (9th ed.) CitationO'Callaghan, Joseph F. The Gibraltar Crusade: Castile and the Battle for the Strait. University of Pennsylvania Press, 2011.
Warning: These citations may not always be 100% accurate.
