APA (7th ed.) Citation

Pfafflin, J. R., & Ziegler, E. N. Encyclopedia of environmental science and engineering.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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