APA (7th ed.) Citation

Frankopan, P. (2012). The First Crusade: The call from the East. Belknap Press of Harvard University Press.

Chicago Style (17th ed.) Citation

Frankopan, Peter. The First Crusade: The Call from the East. Cambridge, Mass.: Belknap Press of Harvard University Press, 2012.

MLA (9th ed.) Citation

Frankopan, Peter. The First Crusade: The Call from the East. Belknap Press of Harvard University Press, 2012.