APA (7th ed.) Citation

Catholic Church. Pope, Gesellschaft der Wissenschaften zu Göttingen, & Kehr, P. F. (1906). Regesta pontificvm romanorvm. Apvd Weidmannos.

Chicago Style (17th ed.) Citation

Catholic Church. Pope, Gesellschaft der Wissenschaften zu Göttingen, and Paul Fridolin Kehr. Regesta Pontificvm Romanorvm. Berolini: Apvd Weidmannos, 1906.

MLA (9th ed.) Citation

Catholic Church. Pope, et al. Regesta Pontificvm Romanorvm. Apvd Weidmannos, 1906.