MLA
Wilson, M. R. Why I Am a Methodist! : Why I Am an African Methodist! : Historical Facts, Reasons Why, and Answers, Etc. Times Book Print, 1891. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/003cz8wbnt-cor.
APA, 6th edition
Wilson, M. R. (1891). Why I am a Methodist! : why I am an African Methodist! : historical facts, reasons why, and answers, etc. [African American author., African American pamphlet.]. Times Book Print; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/003cz8wbnt-cor.
Chicago
Wilson, M. R. “Why I Am a Methodist! : Why I Am an African Methodist! : Historical Facts, Reasons Why, and Answers, Etc.” African American author., African American pamphlet. African American Imprints Collection. Atlanta, Ga.: Times Book Print, 1891. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/003cz8wbnt-cor.