Cita APA (7th ed.)

Wells, D. (2017). Understanding environmental pollution. Larsen & Keller.

Cita Chicago (17th ed.)

Wells, Diego. Understanding Environmental Pollution. New York: Larsen & Keller, 2017.

Cita MLA (9th ed.)

Wells, Diego. Understanding Environmental Pollution. Larsen & Keller, 2017.