Citazione Stile APA (7a Edizione)

Abercrombie, M., Hickman, C. J., & Abercrombie, M. L. J. (1983). The Penguin dictionary of biology (7th ed.). Penguin Books.

Citazione stile Chigago Style (17a edizione)

Abercrombie, Michael, Clarence James Hickman, e Minnie Louie Johnson Abercrombie. The Penguin Dictionary of Biology. 7th ed. Harmondsworth: Penguin Books, 1983.

Citatione MLA (9a ed.)

Abercrombie, Michael, et al. The Penguin Dictionary of Biology. 7th ed. Penguin Books, 1983.