APA (7th ed.) Zitazioa
Roberts, R. (2010). Joe Louis: Hard times man. Yale University Press.
Chicago Style (17th ed.) Zitazioa
Roberts, Randy. Joe Louis: Hard Times Man. New Haven, [Conn.]: Yale University Press, 2010.
MLA (9th ed.) Zitazioa
Roberts, Randy. Joe Louis: Hard Times Man. Yale University Press, 2010.
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