APA (7th ed.) Citation

Pfafflin, J. R., & Ziegler, E. N. (1992). Encyclopedia of environmental science and engineering (3rd ed., rev. and updated.). Gordon and Breach Science Publishers.

Chicago Style (17th ed.) Citation

Pfafflin, J. R., and E. N. Ziegler. Encyclopedia of Environmental Science and Engineering. 3rd ed., rev. and updated. Philadelphia: Gordon and Breach Science Publishers, 1992.

MLA (8th ed.) Citation

Pfafflin, J. R., and E. N. Ziegler. Encyclopedia of Environmental Science and Engineering. 3rd ed., rev. and updated. Gordon and Breach Science Publishers, 1992.