Geological Survey (U.S.). (1942). Bibliography of North American geology, 1940 and 1941 [publications on the geology of North America, Panama, Hawaiian Islands, and Guam]. [s.n.].
Chicago Style (17th ed.) CitationGeological Survey (U.S.). Bibliography of North American Geology, 1940 and 1941 [publications on the Geology of North America, Panama, Hawaiian Islands, and Guam]. [Washington]: [s.n.], 1942.
MLA (9th ed.) CitationGeological Survey (U.S.). Bibliography of North American Geology, 1940 and 1941 [publications on the Geology of North America, Panama, Hawaiian Islands, and Guam]. [s.n.], 1942.
Warning: These citations may not always be 100% accurate.