Hem, J. D. (1985). Study and interpretation of the chemical characteristics of natural water (Third edition.). Dept. of the Interior.
Chicago-Zitierstil (17. Ausg.)Hem, John D. Study and Interpretation of the Chemical Characteristics of Natural Water. Third edition. Alexandria, VA: Dept. of the Interior, 1985.
MLA-Zitierstil (9. Ausg.)Hem, John D. Study and Interpretation of the Chemical Characteristics of Natural Water. Third edition. Dept. of the Interior, 1985.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.