Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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