APA (7th ed.) Citation

Thom, E. M. (1944). Bibliography of North American geology, 1929-1939. U.S. G.P.O..

Chicago Style (17th ed.) Citation

Thom, Emma Mertins. Bibliography of North American Geology, 1929-1939. Washington, [D.C.]: U.S. G.P.O., 1944.

MLA (8th ed.) Citation

Thom, Emma Mertins. Bibliography of North American Geology, 1929-1939. U.S. G.P.O., 1944.