APA (7th ed.) Citation

Runciman, S. (2005). The first crusade (1. publ.). Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Runciman, Steven. The First Crusade. 1. publ. Cambridge [u.a.]: Cambridge Univ. Press, 2005.

MLA (9th ed.) Citation

Runciman, Steven. The First Crusade. 1. publ. Cambridge Univ. Press, 2005.

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