APA (7th ed.) Zitazioa

Freeman, S. (2011). Biological science (Fourth edition.). Benjamin Cummings.

Chicago Style (17th ed.) Zitazioa

Freeman, Scott. Biological Science. Fourth edition. Boston: Benjamin Cummings, 2011.

MLA (9th ed.) Zitazioa

Freeman, Scott. Biological Science. Fourth edition. Benjamin Cummings, 2011.