Powers, G. Black union power in the steel mills: George Powers. A freedomways reader : Afro-America in the seventies.(1977).
Chicago-referens (17:e uppl.)Powers, George. "Black Union Power in the Steel Mills: George Powers." A Freedomways Reader : Afro-America in the Seventies.(1977) .
MLA-referens (8:e uppl.)Powers, George. "Black Union Power in the Steel Mills: George Powers." A Freedomways Reader : Afro-America in the Seventies.(1977), .
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.