APA (7th ed.) Zitazioa

Raven, P. H., & Johnson, G. B. (1988). Understanding Biology (2nd.). Wm. C. Brown Publishers.

Chicago Style (17th ed.) Zitazioa

Raven, Peter H., eta George B. Johnson. Understanding Biology. 2nd. London: Wm. C. Brown Publishers, 1988.

MLA (9th ed.) Zitazioa

Raven, Peter H., eta George B. Johnson. Understanding Biology. 2nd. Wm. C. Brown Publishers, 1988.