American Water Works Association, Valentine, M., & Armstrong, C. (2014). Groundwater (Fourth edition.). American Water Works Association.
Chicago-Zitierstil (17. Ausg.)American Water Works Association, Melissa Valentine, und Cheryl Armstrong. Groundwater. Fourth edition. Denver, Colorado: American Water Works Association, 2014.
MLA-Zitierstil (9. Ausg.)American Water Works Association, et al. Groundwater. Fourth edition. American Water Works Association, 2014.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.