APA (7th ed.) Citation

Federal Writers' Project (Iowa). (1938). Iowa, a guide to the Hawkeye state. The Viking press.

Chicago Style (17th ed.) Citation

Federal Writers' Project (Iowa). Iowa, a Guide to the Hawkeye State. New York: The Viking press, 1938.

MLA (9th ed.) Citation

Federal Writers' Project (Iowa). Iowa, a Guide to the Hawkeye State. The Viking press, 1938.

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