APA (7th ed.) Citation

Runciman. (1951). A history of the crusades vol I: The first crusades and the foundation of the Kingdom of Jerusalem. Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Runciman. A History of the Crusades Vol I: The First Crusades and the Foundation of the Kingdom of Jerusalem. New York: Cambridge Univ. Press, 1951.

MLA (8th ed.) Citation

Runciman. A History of the Crusades Vol I: The First Crusades and the Foundation of the Kingdom of Jerusalem. Cambridge Univ. Press, 1951.