United States. Bonneville Power Administration. (1939). Pacific Northwest mineral occurrences: August, 1939. U.S. Dept. of the Interior.
Chicago Style (17th ed.) CitationUnited States. Bonneville Power Administration. Pacific Northwest Mineral Occurrences: August, 1939. Washington, D.C.: U.S. Dept. of the Interior, 1939.
MLA引文United States. Bonneville Power Administration. Pacific Northwest Mineral Occurrences: August, 1939. U.S. Dept. of the Interior, 1939.
警告:這些引文格式不一定是100%准確.