APA (7e ed.) Bronvermelding

Croall, S. (1981). Ecology for beginners. Pantheon Books.

Chicago (17e ed.) Bronvermelding

Croall, Stephen. Ecology for Beginners. New York: Pantheon Books, 1981.

MLA (9e ed.) Bronvermelding

Croall, Stephen. Ecology for Beginners. Pantheon Books, 1981.