APA (7th ed.) Citation

Mayr, E. (1942). Systematics and the origin of species, from the viewpoint of a zoologist. Columbia University Press.

Chicago Style (17th ed.) Citation

Mayr, Ernst. Systematics and the Origin of Species, from the Viewpoint of a Zoologist. New York: Columbia University Press, 1942.

MLA (9th ed.) Citation

Mayr, Ernst. Systematics and the Origin of Species, from the Viewpoint of a Zoologist. Columbia University Press, 1942.

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