Cita APA (7th ed.)
Raven, P. H., & Johnson, G. B. (1996). Biology (4th ed.). Wm. C. Brown Publishers.
Cita Chicago (17th ed.)
Raven, Peter H., i George B. Johnson. Biology. 4th ed. Dubuque, Iowa: Wm. C. Brown Publishers, 1996.
Cita MLA (9th ed.)
Raven, Peter H., i George B. Johnson. Biology. 4th ed. Wm. C. Brown Publishers, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.