Gardner Smith, W. Ethel waters: William Gardner Smith. American essays - Afro-american authors.(1992).
Lua i Stíl Chicago (17ú heag.)Gardner Smith, William. "Ethel Waters: William Gardner Smith." American Essays - Afro-american Authors.(1992) .
Lua MLA (8ú heag.)Gardner Smith, William. "Ethel Waters: William Gardner Smith." American Essays - Afro-american Authors.(1992), .
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.