MLA
Directory of the Branch Presidents and Secretaries of the National Association for the Advancement of Colored People. [The Association], 1920. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4644qrfk32-cor.
APA, 6th edition
Directory of the branch presidents and secretaries of the National Association for the Advancement of Colored People. (1920). [African American author., African American pamphlet., African American publisher.]. [The Association]; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4644qrfk32-cor.
Chicago
“Directory of the Branch Presidents and Secretaries of the National Association for the Advancement of Colored People.” African American author., African American pamphlet., African American publisher. African American Imprints Collection. New York: [The Association], 1920. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4644qrfk32-cor.