APA (7th ed.) Citation

Croll, N. A. (1966). Ecology of parasites. Harvard University Press.

Chicago Style (17th ed.) Citation

Croll, Neil Argo. Ecology of Parasites. Cambridge: Harvard University Press, 1966.

MLA (9th ed.) Citation

Croll, Neil Argo. Ecology of Parasites. Harvard University Press, 1966.