APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Pfafflin, J. R., and E. N. Ziegler. Encyclopedia of Environmental Science and Engineering. 2nd rev. & updated ed.

MLA (9th ed.) Citation

Pfafflin, J. R., and E. N. Ziegler. Encyclopedia of Environmental Science and Engineering. 2nd rev. & updated ed.

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