Geological Survey (U.S.) & Swanson, D. A. (1980). Reconnaissance geologic map of the Columbia River Basalt Group, Pullman and Walla Walla quadrangles, southeast Washington and adjacent Idaho. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and Donald A. Swanson. Reconnaissance Geologic Map of the Columbia River Basalt Group, Pullman and Walla Walla Quadrangles, Southeast Washington and Adjacent Idaho. Reston, Va.: The Survey, 1980.
MLA (9th ed.) CitationGeological Survey (U.S.) and Donald A. Swanson. Reconnaissance Geologic Map of the Columbia River Basalt Group, Pullman and Walla Walla Quadrangles, Southeast Washington and Adjacent Idaho. The Survey, 1980.
Warning: These citations may not always be 100% accurate.