APA (7th ed.) Citation

Bernard Silvestris, a. 1., & Wetherbee, W. (1973). The Cosmographia of Bernardus Silvestris. Columbia University Press.

Chicago Style (17th ed.) Citation

Bernard Silvestris, active 1136, and Winthrop Wetherbee. The Cosmographia of Bernardus Silvestris. New York: Columbia University Press, 1973.

MLA (9th ed.) Citation

Bernard Silvestris, active 1136, and Winthrop Wetherbee. The Cosmographia of Bernardus Silvestris. Columbia University Press, 1973.