The Crusades and their sources :
essays presented to Bernard Hamilton /
edited by John France and William G. Zajac.

APA Citation

Zajac, W. G., France, J., Hamilton, B. (1998). The Crusades and their sources: essays presented to Bernard Hamilton. Aldershot, Hampshire, Great Britain: Ashgate.

MLA Citation

Zajac, William G, John France, and Bernard Hamilton. The Crusades And Their Sources: Essays Presented to Bernard Hamilton. Aldershot, Hampshire, Great Britain: Ashgate, 1998.

Warning: These citations may not always be complete (especially for serials).