Lua APA (7ú heag.)

Bohner, C. H. (1965). Robert Penn Warren. Twayne Publishers.

Lua i Stíl Chicago (17ú heag.)

Bohner, Charles H. Robert Penn Warren. New York: Twayne Publishers, 1965.

Lua MLA (8ú heag.)

Bohner, Charles H. Robert Penn Warren. Twayne Publishers, 1965.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.