APA (7th ed.) Citation

Petrus in Altis. (1477). Cordiale quattuor novissimorum. Petrus in Altis de Olpe.

Chicago Style (17th ed.) Citation

Petrus in Altis. Cordiale Quattuor Novissimorum. Köln: Petrus in Altis de Olpe, 1477.

MLA (9th ed.) Citation

Petrus in Altis. Cordiale Quattuor Novissimorum. Petrus in Altis de Olpe, 1477.

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