APA (7th ed.) Citation

Petrus. Archivmaterialien zu Petrus (Pictaviensis, Cancellarius), 1130-1205.

Chicago Style (17th ed.) Citation

Petrus. Archivmaterialien Zu Petrus (Pictaviensis, Cancellarius), 1130-1205.

MLA (9th ed.) Citation

Petrus. Archivmaterialien Zu Petrus (Pictaviensis, Cancellarius), 1130-1205.

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