APA (7th ed.) Citation

Hiestand, R. (2001). The papacy and the Second Crusade.

Chicago Style (17th ed.) Citation

Hiestand, Rudolf. The Papacy and the Second Crusade. 2001.

MLA (9th ed.) Citation

Hiestand, Rudolf. The Papacy and the Second Crusade. 2001.

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