APA (7th ed.) Citation

Bernardus Silvestris & Wetherbee, W. (1973). The cosmographia. Records of civilization.

Chicago Style (17th ed.) Citation

Bernardus Silvestris and Winthrop Wetherbee. "The Cosmographia." Records of Civilization 1973.

MLA (9th ed.) Citation

Bernardus Silvestris and Winthrop Wetherbee. "The Cosmographia." Records of Civilization, 1973.

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