Thompson, M. M. (1981). Maps for America: Cartographic products of the US Geological Survey and others (2. Edition.). Geological Survey.
Chicago Style (17th ed.) CitationThompson, Morris Mordecai. Maps for America: Cartographic Products of the US Geological Survey and Others. 2. Edition. Reston, Va: Geological Survey, 1981.
MLA (9th ed.) CitationThompson, Morris Mordecai. Maps for America: Cartographic Products of the US Geological Survey and Others. 2. Edition. Geological Survey, 1981.
Warning: These citations may not always be 100% accurate.