APA (7th ed.) Citation

Barber, M. (2012). The crusader states. Yale Univ. Press.

Chicago Style (17th ed.) Citation

Barber, Malcolm. The Crusader States. New Haven, Conn. [u.a.]: Yale Univ. Press, 2012.

MLA (8th ed.) Citation

Barber, Malcolm. The Crusader States. Yale Univ. Press, 2012.

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