APA (7th ed.) Citation

Key, V. O. (1949). Southern politics in State and Nation. Knopf.

Chicago Style (17th ed.) Citation

Key, Valdimer Orlando. Southern Politics in State and Nation. New York: Knopf, 1949.

MLA (9th ed.) Citation

Key, Valdimer Orlando. Southern Politics in State and Nation. Knopf, 1949.