APA-Zitierstil (7. Ausg.)

Cowdrey, H. E. J. (2000). Popes and Church Reform in the 11th Century. Variorum.

Chicago-Zitierstil (17. Ausg.)

Cowdrey, Herbert Edward John. Popes and Church Reform in the 11th Century. Aldershot [u.a.]: Variorum, 2000.

MLA-Zitierstil (9. Ausg.)

Cowdrey, Herbert Edward John. Popes and Church Reform in the 11th Century. Variorum, 2000.