Cita APA (7a ed.)

Raven, P. H., & Johnson, G. B. (1996). Biology (4th ed.). WCB.

Cita Chicago Style (17a ed.)

Raven, Peter H., y George B. Johnson. Biology. 4th ed. Boston: WCB, 1996.

Cita MLA (9a ed.)

Raven, Peter H., y George B. Johnson. Biology. 4th ed. WCB, 1996.