Williams, E. L. (1977). The Howard University bibliography of African and Afro-American religious studies: With locations in American libraries. Wilmington, Del.: Scholarly Resources.

Williams, Ethel L. The Howard University Bibliography of African and Afro-American Religious Studies: With Locations in American Libraries. Wilmington, Del.: Scholarly Resources, 1977.

Williams, Ethel L. The Howard University Bibliography of African and Afro-American Religious Studies: With Locations in American Libraries. Wilmington, Del.: Scholarly Resources, 1977.