Hackett, O. M. (1963). Ground-water levels in the United States, 1956-60: Northwestern states. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationHackett, O. M. Ground-water Levels in the United States, 1956-60: Northwestern States. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1963.
MLA (9th ed.) CitationHackett, O. M. Ground-water Levels in the United States, 1956-60: Northwestern States. United States Department of the Interior, Geological Survey, 1963.
Warning: These citations may not always be 100% accurate.