MLA
Du Bois, W. E. B. (William Edward Burghardt), 1868-1963. Some notes on the Negroes in New York City : compiled from the reports of the United States census and other sources. 1903. African American Imprints Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/385n8pk1tk-cor.
APA, 6th edition
Du Bois, W. E. B. (William Edward Burghardt), 1868-1963. (1903)[Some notes on the Negroes in New York City : compiled from the reports of the United States census and other sources]. African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/385n8pk1tk-cor.
Chicago
Du Bois, W. E. B. (William Edward Burghardt), 1868-1963, Some notes on the Negroes in New York City : compiled from the reports of the United States census and other sources, 1903, African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/385n8pk1tk-cor.