APA (7th ed.) Citation

Runciman, S. (1965). A history of the Crusades (1st Harper Torchbooks ed.). Harper & Row.

Chicago Style (17th ed.) Citation

Runciman, Steven. A History of the Crusades. 1st Harper Torchbooks ed. Harper & Row, 1965.

MLA (9th ed.) Citation

Runciman, Steven. A History of the Crusades. 1st Harper Torchbooks ed. Harper & Row, 1965.

Warning: These citations may not always be 100% accurate.