Cita APA (7a ed.)

Raven, P. H., & Johnson, G. B. (2002). Biology (6th ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Raven, Peter H., y George B. Johnson. Biology. 6th ed. Boston: McGraw-Hill, 2002.

Cita MLA (9a ed.)

Raven, Peter H., y George B. Johnson. Biology. 6th ed. McGraw-Hill, 2002.