APA (7th ed.) Zitazioa

Hill, M. K. (1997). Understanding environmental pollution. Univ. Pr.

Chicago Style (17th ed.) Zitazioa

Hill, Marquita K. Understanding Environmental Pollution. Cambridge: Univ. Pr, 1997.

MLA (9th ed.) Zitazioa

Hill, Marquita K. Understanding Environmental Pollution. Univ. Pr, 1997.