Hardison, O. B. (1966). Practical rhetoric. Appleton-Century-Crofts.
Lua i Stíl Chicago (17ú heag.)Hardison, O. B. Practical Rhetoric. New York: Appleton-Century-Crofts, 1966.
Lua MLA (9ú heag.)Hardison, O. B. Practical Rhetoric. Appleton-Century-Crofts, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.