APA (7th ed.) Citation

Runciman, S. (1964). A history of the Crusades (1. Aufl.). Penguin.

Chicago Style (17th ed.) Citation

Runciman, Steven. A History of the Crusades. 1. Aufl. Harmondsworth: Penguin, 1964.

MLA (8th ed.) Citation

Runciman, Steven. A History of the Crusades. 1. Aufl. Penguin, 1964.