Sullivan, D. (2011). Keep on pushing: Black power music from blues to hip-hop. Lawrence Hill Books.
Lua i Stíl Chicago (17ú heag.)Sullivan, Denise. Keep on Pushing: Black Power Music from Blues to Hip-hop. Chicago: Lawrence Hill Books, 2011.
Lua MLA (9ú heag.)Sullivan, Denise. Keep on Pushing: Black Power Music from Blues to Hip-hop. Lawrence Hill Books, 2011.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.