APA (7th ed.) Zitazioa

Abercrombie, M., Hickman, C. J., & Johnson, M. L. (1980). The Penguin dictionary of biology (7th ed.). Penguin Books.

Chicago Style (17th ed.) Zitazioa

Abercrombie, M., C. J. Hickman, eta M. L. Johnson. The Penguin Dictionary of Biology. 7th ed. London: Penguin Books, 1980.

MLA (9th ed.) Zitazioa

Abercrombie, M., et al. The Penguin Dictionary of Biology. 7th ed. Penguin Books, 1980.