APA (7th ed.) Citation

Runciman, S. (2004). The First Crusade (Abridged ed.). Cambridge University Press.

Chicago Style (17th ed.) Citation

Runciman, Steven. The First Crusade. Abridged ed. Cambridge: Cambridge University Press, 2004.

MLA (9th ed.) Citation

Runciman, Steven. The First Crusade. Abridged ed. Cambridge University Press, 2004.