MLA
McGuire, George Alexander, 1866-1934. Universal Negro catechism : a course of instruction in religious and historical knowledge pertaining to the race. 1921. African American Imprints Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/590dv41pzh-cor.
APA, 6th edition
McGuire, George Alexander, 1866-1934. (1921)[Universal Negro catechism : a course of instruction in religious and historical knowledge pertaining to the race]. African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/590dv41pzh-cor.
Chicago
McGuire, George Alexander, 1866-1934, Universal Negro catechism : a course of instruction in religious and historical knowledge pertaining to the race, 1921, African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/590dv41pzh-cor.