Woodward, D. G., Gannett, M. W., & Vaccaro, J. J. (1998). Hydrogeologic framework of the Willamette Lowland Aquifer system, Oregon and Washington. U.S. G.P.O. : U.S. Dept. of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationWoodward, D. G., Marshall W. Gannett, and J. J. Vaccaro. Hydrogeologic Framework of the Willamette Lowland Aquifer System, Oregon and Washington. Washington: U.S. G.P.O. : U.S. Dept. of the Interior, U.S. Geological Survey, 1998.
MLA (9th ed.) CitationWoodward, D. G., et al. Hydrogeologic Framework of the Willamette Lowland Aquifer System, Oregon and Washington. U.S. G.P.O. : U.S. Dept. of the Interior, U.S. Geological Survey, 1998.
Warning: These citations may not always be 100% accurate.