APA aipamena

Layzer, J. A. (2012). The environmental case (3rd ed.). CQ Press.

Chicago Style aipamena

Layzer, Judith A. The Environmental Case. 3rd ed. Washington, D.C.: CQ Press, 2012.

MLA aipamena

Layzer, Judith A. The Environmental Case. 3rd ed. CQ Press, 2012.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.