Cita APA (7th ed.)
Howard, W. (1979). Gore Vidal's Caligula: A novel based on Gore Vidal's original screenplay. Warner books.
Cita Chicago (17th ed.)
Howard, William. Gore Vidal's Caligula: A Novel Based on Gore Vidal's Original Screenplay. New York: Warner books, 1979.
Cita MLA (9th ed.)
Howard, William. Gore Vidal's Caligula: A Novel Based on Gore Vidal's Original Screenplay. Warner books, 1979.
Atenció: Aquestes cites poden no estar 100% correctes.