Sullivan, D. (2011). Keep on pushing: Black power music from blues to hip-hop. Lawrence Hill Books.
Chicago-čujuhus (17. p.)Sullivan, Denise. Keep on Pushing: Black Power Music from Blues to Hip-hop. Chicago: Lawrence Hill Books, 2011.
MLA-čujuhus (9. p.)Sullivan, Denise. Keep on Pushing: Black Power Music from Blues to Hip-hop. Lawrence Hill Books, 2011.
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