APA (7th ed.) Citation

Andrea, A. J., & Whalen Brett E. (2008). Contemporary sources for the fourth crusade (Revised edition.). Brill.

Chicago Style (17th ed.) Citation

Andrea, Alfred J., and Whalen Brett E. Contemporary Sources for the Fourth Crusade. Revised edition. Leiden: Brill, 2008.

MLA (9th ed.) Citation

Andrea, Alfred J., and Whalen Brett E. Contemporary Sources for the Fourth Crusade. Revised edition. Brill, 2008.

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