Cita APA (7th ed.)

Hill, M. K. (2010). Understanding environmental pollution (3rd ed.). Cambridge University press.

Cita Chicago (17th ed.)

Hill, Marquita K. Understanding Environmental Pollution. 3rd ed. New York: Cambridge University press, 2010.

Cita MLA (9th ed.)

Hill, Marquita K. Understanding Environmental Pollution. 3rd ed. Cambridge University press, 2010.