Sullivan, D. (2011). Keep on pushing: Black power music from blues to hip-hop. Lawrence Hill Books.
Chicago-referens (17:e uppl.)Sullivan, Denise. Keep on Pushing: Black Power Music from Blues to Hip-hop. Chicago: Lawrence Hill Books, 2011.
MLA-referens (9:e uppl.)Sullivan, Denise. Keep on Pushing: Black Power Music from Blues to Hip-hop. Lawrence Hill Books, 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.