Gardner Smith, W. Ethel waters: William Gardner Smith. American essays - Afro-american authors.(1992).
Čikaški stil citiranja (17. izdanje)Gardner Smith, William. "Ethel Waters: William Gardner Smith." American Essays - Afro-american Authors.(1992) .
MLA način citiranja (8. izdanje)Gardner Smith, William. "Ethel Waters: William Gardner Smith." American Essays - Afro-american Authors.(1992), .
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