APA (7th ed.) Citation

Piper, A. M. (1942). Ground-water resources of the Willamette Valley, Oregon. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Piper, Arthur M. Ground-water Resources of the Willamette Valley, Oregon. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1942.

MLA (9th ed.) Citation

Piper, Arthur M. Ground-water Resources of the Willamette Valley, Oregon. United States Department of the Interior, Geological Survey, 1942.

Warning: These citations may not always be 100% accurate.