Jefferson, M., Pinckney, J., & Skinner, E. P. (1974). Roots of time: A portrait of African life and culture ([1st ed.].). Zenith Books.
Citace podle Chicago (17th ed.)Jefferson, Margo, Jerry Pinckney, a Elliott Percival Skinner. Roots of Time: A Portrait of African Life and Culture. [1st ed.]. Garden City, N.Y.: Zenith Books, 1974.
Citace podle MLA (9th ed.)Jefferson, Margo, et al. Roots of Time: A Portrait of African Life and Culture. [1st ed.]. Zenith Books, 1974.
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