Conservation and environmentalism : an encyclopedia
edited by Robert Paehlke
Fitzroy Dearborn Publishers, 1995
 Buku Referensi
McGraw-Hill dictionary of environmental science
McGraw-Hill, 2003
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Environmental encyclopedia
edited by William P. Cunningham [and others]
Jaico Publishing House, 1999
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Encyclopedia of energy technology and the environment : volume 1
editors, Attilio Bisio, Sharon Boots
John Wiley & Sons, 1995
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Encyclopedia of energy technology and the environment : volume 2
Attilio Bisio, Sharon Boots, editors
John Wiley & Sons, 1995
 Buku Referensi