American Water Works Association, Valentine, M., & Armstrong, C. (2014). Groundwater (Fourth edition.). American Water Works Association.
Chicago Style (17. basım) AtıfAmerican Water Works Association, Melissa Valentine, ve Cheryl Armstrong. Groundwater. Fourth edition. Denver, Colorado: American Water Works Association, 2014.
MLA (9th ed.) AtıfAmerican Water Works Association, et al. Groundwater. Fourth edition. American Water Works Association, 2014.
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