Roberts, R. (2010). Joe Louis: Hard times man. Yale University Press.
Chicago-čujuhus (17. p.)Roberts, Randy. Joe Louis: Hard Times Man. New Haven, [Conn.]: Yale University Press, 2010.
MLA-čujuhus (9. p.)Roberts, Randy. Joe Louis: Hard Times Man. Yale University Press, 2010.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.