Cita APA (7th ed.)

Audesirk, T., Audesirk, G., & Byers, B. E. (2006). Life on earth (4th ed.). Pearson Prentice Hall.

Cita Chicago (17th ed.)

Audesirk, Teresa, Gerald Audesirk, i Bruce E. Byers. Life on Earth. 4th ed. Upper Saddle River, New Jersey: Pearson Prentice Hall, 2006.

Cita MLA (9th ed.)

Audesirk, Teresa, et al. Life on Earth. 4th ed. Pearson Prentice Hall, 2006.