APA (7th ed.) Citation

Milgrom, H., & Crews, D. (1972). ABC of ecology. Collier Books.

Chicago Style (17th ed.) Citation

Milgrom, Harry, and Donald Crews. ABC of Ecology. New York: Collier Books, 1972.

MLA (9th ed.) Citation

Milgrom, Harry, and Donald Crews. ABC of Ecology. Collier Books, 1972.