MLA
Barber, J. Max. The Negro of the Earlier World : an Excursion into Negro Ancient History. Printed by A.M.E. Book Concern, 1915. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/627zkh19g5-cor.
APA, 6th edition
Barber, J. M. (1915). The Negro of the earlier world : an excursion into Negro ancient history [African American pamphlet., African American publisher., African American author.]. Printed by A.M.E. Book Concern; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/627zkh19g5-cor.
Chicago
Barber, J. Max. “The Negro of the Earlier World : an Excursion into Negro Ancient History.” African American pamphlet., African American publisher., African American author. African American Imprints Collection. Philadelphia, Pa.: Printed by A.M.E. Book Concern, 1915. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/627zkh19g5-cor.