Cita APA

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

Citación estilo Chicago

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

Cita MLA

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