APA (7th ed.) Citation

Writers' Program of the Work Projects Administration in the State of Montana. (1939). Montana, a state guide book. Viking Press.

Chicago Style (17th ed.) Citation

Writers' Program of the Work Projects Administration in the State of Montana. Montana, a State Guide Book. New York: Viking Press, 1939.

MLA (8th ed.) Citation

Writers' Program of the Work Projects Administration in the State of Montana. Montana, a State Guide Book. Viking Press, 1939.

Warning: These citations may not always be 100% accurate.