United States. Environmental Protection Agency. Office of Ground Water and Drinking Water. (1999). The class V underground injection control study: Volume 20, Salt water intrusion barrier wells. United States, Environmental Protection Agency, Office of Ground Water and Drinking Water.
Chicago Style (17th ed.) CitationUnited States. Environmental Protection Agency. Office of Ground Water and Drinking Water. The Class V Underground Injection Control Study: Volume 20, Salt Water Intrusion Barrier Wells. [Washington, D.C.]: United States, Environmental Protection Agency, Office of Ground Water and Drinking Water, 1999.
MLA (9th ed.) CitationUnited States. Environmental Protection Agency. Office of Ground Water and Drinking Water. The Class V Underground Injection Control Study: Volume 20, Salt Water Intrusion Barrier Wells. United States, Environmental Protection Agency, Office of Ground Water and Drinking Water, 1999.