Cita APA (7th ed.)

Hill, M. K. (2010). Understanding environmental pollution (3rd ed.). Univ. Pr.

Cita Chicago (17th ed.)

Hill, Marquita K. Understanding Environmental Pollution. 3rd ed. Cambridge: Univ. Pr, 2010.

Cita MLA (9th ed.)

Hill, Marquita K. Understanding Environmental Pollution. 3rd ed. Univ. Pr, 2010.