APA (7th ed.) Citation

Ludwig, E. (1937). Cleopatra: The story of a queen (1. publ.). Viking Press.

Chicago Style (17th ed.) Citation

Ludwig, Emil. Cleopatra: The Story of a Queen. 1. publ. New York: Viking Press, 1937.

MLA (9th ed.) Citation

Ludwig, Emil. Cleopatra: The Story of a Queen. 1. publ. Viking Press, 1937.