APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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