Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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