APA (7th ed.) Citation

Armstrong, K. (1988). Holy war: The crusades and their impact on today's world. ADoubleday.

Chicago Style (17th ed.) Citation

Armstrong, Karen. Holy War: The Crusades and Their Impact on Today's World. New york: ADoubleday, 1988.

MLA (9th ed.) Citation

Armstrong, Karen. Holy War: The Crusades and Their Impact on Today's World. ADoubleday, 1988.

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