APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

Plaffin, James R., and Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 3rd ed., rev. & updated. Philadelphia: Gordon and Breach, 1992.

MLA (9th ed.) Citation

Plaffin, James R., and Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 3rd ed., rev. & updated. Gordon and Breach, 1992.