MLA
Pickens, William, 1881-1954. The ultimate effects of segregation & discrimination : the seldom thought on the Negro problem. 1915. African American Imprints Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/658pc8680z-cor.
APA, 6th edition
Pickens, William, 1881-1954. (1915)[The ultimate effects of segregation & discrimination : the seldom thought on the Negro problem]. African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/658pc8680z-cor.
Chicago
Pickens, William, 1881-1954, The ultimate effects of segregation & discrimination : the seldom thought on the Negro problem, 1915, African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/658pc8680z-cor.