APA Edition Citation

James R. Pfafflin & Edward N. Ziegler. (2006). Encyclopedia of environmental science and engineering (5th ed.). CRC.

Chicago Edition Citation

James R. Pfafflin and Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 5th ed. Boca Raton: CRC, 2006.

MLA Edition Citation

James R. Pfafflin and Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 5th ed. CRC, 2006.