Cita APA (7th ed.)

Rittner, D., & McCabe, T. L. (2004). Encyclopedia of biology. Facts On File.

Cita Chicago (17th ed.)

Rittner, Don, i Timothy Lee McCabe. Encyclopedia of Biology. New York: Facts On File, 2004.

Cita MLA (9th ed.)

Rittner, Don, i Timothy Lee McCabe. Encyclopedia of Biology. Facts On File, 2004.