Porter, T. J. The social roots of Afro-American music: 1950 - 1970: Thomas J. Porter. A freedomways reader : Afro-America in the seventies.(1977).

Porter, Thomas J. "The Social Roots of Afro-American Music: 1950 - 1970: Thomas J. Porter." A Freedomways Reader : Afro-America in the Seventies.(1977) .

Porter, Thomas J. "The Social Roots of Afro-American Music: 1950 - 1970: Thomas J. Porter." A Freedomways Reader : Afro-America in the Seventies.(1977), .