APA (7th ed.) Zitazioa

Wright Richard T. (2011). Environmental science: Toward a sustainable future. PHI Learning.

Chicago Style (17th ed.) Zitazioa

Wright Richard T. Environmental Science: Toward a Sustainable Future. New Delhi: PHI Learning, 2011.

MLA (9th ed.) Zitazioa

Wright Richard T. Environmental Science: Toward a Sustainable Future. PHI Learning, 2011.