APA (7th ed.) Citation

Runciman, S. (2006). The First Crusade (Abridged ed, repr.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Runciman, Steven. The First Crusade. Abridged ed, repr. New York [etc.]: Cambridge University Press, 2006.

MLA (9th ed.) Citation

Runciman, Steven. The First Crusade. Abridged ed, repr. Cambridge University Press, 2006.