APA Citation

Pfafflin, J. R., & Ziegler, E. N. Encyclopedia of environmental science and engineering (Fifth edition.).

Chicago Style Citation

Pfafflin, James R., and Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. Fifth edition.

MLA Citation

Pfafflin, James R., and Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. Fifth edition.

Warning: These citations may not always be 100% accurate.