Cita APA (7th ed.)
Raven, P. H., & Johnson, G. B. (1999). Biology (5th ed.). WCB/McGraw-Hill.
Cita Chicago (17th ed.)
Raven, Peter H., i George B. Johnson. Biology. 5th ed. Boston: WCB/McGraw-Hill, 1999.
Cita MLA (9th ed.)
Raven, Peter H., i George B. Johnson. Biology. 5th ed. WCB/McGraw-Hill, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.