APA (7th ed.) Citation

Gannett, M. W., & Caldwell, R. R. (1999). Geologic framework of the Willamette Lowland Aquifer system, Oregon and Washington. U.S. G.P.O..

Chicago Style (17th ed.) Citation

Gannett, Marshall W., and Rodney R. Caldwell. Geologic Framework of the Willamette Lowland Aquifer System, Oregon and Washington. Washington: U.S. G.P.O., 1999.

MLA (9th ed.) Citation

Gannett, Marshall W., and Rodney R. Caldwell. Geologic Framework of the Willamette Lowland Aquifer System, Oregon and Washington. U.S. G.P.O., 1999.