APA (7th ed.) Citation

Bernardus Silvestris & Bernard Clairvaux, A. (1481). De forma vitae honestae. [Stephan Plannck].

Chicago Style (17th ed.) Citation

Bernardus Silvestris and Abt Bernard Clairvaux. De Forma Vitae Honestae. [Rom]: [Stephan Plannck], 1481.

MLA (9th ed.) Citation

Bernardus Silvestris and Abt Bernard Clairvaux. De Forma Vitae Honestae. [Stephan Plannck], 1481.