Campbell, R. (1952). Light on a dark horse: An autobiography (1901-1935. H. Regnery.
Lua i Stíl Chicago (17ú heag.)Campbell, Roy. Light on a Dark Horse: An Autobiography (1901-1935. Chicago: H. Regnery, 1952.
Lua MLA (9ú heag.)Campbell, Roy. Light on a Dark Horse: An Autobiography (1901-1935. H. Regnery, 1952.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.