Cita APA (7a ed.)

Botkin, D. B., & Keller ,Edward A. (2012). Environmental science (8th ed.). Wiley.

Cita Chicago Style (17a ed.)

Botkin, Daniel B., y Keller ,Edward A. Environmental Science. 8th ed. Delhi: Wiley, 2012.

Cita MLA (9a ed.)

Botkin, Daniel B., y Keller ,Edward A. Environmental Science. 8th ed. Wiley, 2012.