APA (7th ed.) Citation

Billings, M. (2000). The crusades (Rev. ed.). Tempus.

Chicago Style (17th ed.) Citation

Billings, Malcolm. The Crusades. Rev. ed. Stroud [u.a.]: Tempus, 2000.

MLA (9th ed.) Citation

Billings, Malcolm. The Crusades. Rev. ed. Tempus, 2000.