APA (7th ed.) Citation

Angold, M. (2003). The Fourth Crusade: Event and context. Longman.

Chicago Style (17th ed.) Citation

Angold, Michael. The Fourth Crusade: Event and Context. Harlow [u.a.]: Longman, 2003.

MLA (8th ed.) Citation

Angold, Michael. The Fourth Crusade: Event and Context. Longman, 2003.