APA (7th ed.) Citation

Du Bois, S. G. (1949). Your most humble servant. Messner.

Chicago Style (17th ed.) Citation

Du Bois, Shirley Graham. Your Most Humble Servant. New York: Messner, 1949.

MLA (9th ed.) Citation

Du Bois, Shirley Graham. Your Most Humble Servant. Messner, 1949.