1. John Wesley Work,Folksongs of the American Negro.Nashville: Fisk University, 1915, p. 7.
2. Melville J. Herskovits,The Myth of the Negro Past.Boston: Beacon, 1958, p. 61.
3. William B. Bascom and Melville Herskovits (eds.),Continuity and Change in African Cultures.Chicago: University of Chicago, 1959, p. 12.
4. Janheinz Jahn,Muntu.New York: Grove, 1961, pp. 124–125.