Pfafflin, J. R., & Ziegler, E. N. (1992). Encyclopedia of environment science and engineering (Third edition, revised and updated.). Gordon and Breach Science Publisher.
Chicago-Zitierstil (17. Ausg.)Pfafflin, James R., und Edward N. Ziegler. Encyclopedia of Environment Science and Engineering. Third edition, revised and updated. Philadelphia, Pennsylvania: Gordon and Breach Science Publisher, 1992.
MLA-Zitierstil (9. Ausg.)Pfafflin, James R., und Edward N. Ziegler. Encyclopedia of Environment Science and Engineering. Third edition, revised and updated. Gordon and Breach Science Publisher, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.