Lua APA (7ú heag.)
Howard, W. (1979). Gore Vidal's Caligula: A novel based on Gore Vidal's original screenplay. Warner books.
Lua i Stíl Chicago (17ú heag.)
Howard, William. Gore Vidal's Caligula: A Novel Based on Gore Vidal's Original Screenplay. New York: Warner books, 1979.
Lua MLA (9ú heag.)
Howard, William. Gore Vidal's Caligula: A Novel Based on Gore Vidal's Original Screenplay. Warner books, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.