Cita APA (7th ed.)

Cunningham, W. P., & Cunningham , M. A. (2004). Principles of environmental science : inquiry and: Applications (2nd ed.). McGraw-Hill.

Cita Chicago (17th ed.)

Cunningham, William P., i Mary Ann Cunningham. Principles of Environmental Science : Inquiry and: Applications. 2nd ed. Boston: McGraw-Hill, 2004.

Cita MLA (9th ed.)

Cunningham, William P., i Mary Ann Cunningham. Principles of Environmental Science : Inquiry and: Applications. 2nd ed. McGraw-Hill, 2004.