Παραπομπή APA

James R. Pfafflin & Edward N. Ziegler. (2006). Encyclopedia of environmental science and engineering (5th ed.). CRC.

Παραπομπή Chicago Style

James R. Pfafflin και Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 5th ed. Boca Raton: CRC, 2006.

Παραπομπή MLA

James R. Pfafflin και Edward N. Ziegler. Encyclopedia of Environmental Science and Engineering. 5th ed. CRC, 2006.