APA (7th ed.) Citation

Preston, H. A. (1970). A history of the Walla Walla District. U.S. Army, Corps of Engineers.

Chicago Style (17th ed.) Citation

Preston, Howard A. A History of the Walla Walla District. Walla Walla, Wash.: U.S. Army, Corps of Engineers, 1970.

MLA (8th ed.) Citation

Preston, Howard A. A History of the Walla Walla District. U.S. Army, Corps of Engineers, 1970.

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