MLA
Howard University Alumni Directory, 1870-1919. Howard University, 1920. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7032280jk2-cor.
APA, 6th edition
Howard University alumni directory, 1870-1919. (1920). [African American publisher.]. Howard University; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7032280jk2-cor.
Chicago
“Howard University Alumni Directory, 1870-1919.” African American publisher. African American Imprints Collection. Washington, D.C.: Howard University, 1920. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/7032280jk2-cor.