Pfafflin, J. R., & Ziegler, E. N. (1998). Encyclopedia of Environmental Science and Engineering (4th ed., Revised and updated.). Gordon And Breach Science Publishers.
Chicago Edition CitationPfafflin, James R., and Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 4th ed., Revised and updated. Australia: Gordon And Breach Science Publishers, 1998.
MLA Edition CitationPfafflin, James R., and Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 4th ed., Revised and updated. Gordon And Breach Science Publishers, 1998.
Warning: These citations may not always be 100% accurate.