Cita APA (7th ed.)

Pfafflin, J. R., & Ziegler, E. N. (1983). Encyclopedia of environmental science and engineering (2nd rev. and updated ed.). Gordon and Breach Science Publishers.

Cita Chicago (17th ed.)

Pfafflin, James R., i Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 2nd rev. and updated ed. New York: Gordon and Breach Science Publishers, 1983.

Cita MLA (8th ed.)

Pfafflin, James R., i Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 2nd rev. and updated ed. Gordon and Breach Science Publishers, 1983.