MLA
Ferguson, Samuel David, 1842-1916. A double anniversary sermon of the thirty year's episcopate of Bishop Samuel David Ferguson, June 24, 1885-1915 : fifty years of his ministry, December 31, 1865-1915, preached in St. Mark's Church, June 27, 1915. 1915. African American Imprints Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/180vq83c9v-cor.
APA, 6th edition
Ferguson, Samuel David, 1842-1916. (1915)[A double anniversary sermon of the thirty year's episcopate of Bishop Samuel David Ferguson, June 24, 1885-1915 : fifty years of his ministry, December 31, 1865-1915, preached in St. Mark's Church, June 27, 1915]. African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/180vq83c9v-cor.
Chicago
Ferguson, Samuel David, 1842-1916, A double anniversary sermon of the thirty year's episcopate of Bishop Samuel David Ferguson, June 24, 1885-1915 : fifty years of his ministry, December 31, 1865-1915, preached in St. Mark's Church, June 27, 1915, 1915, African American Imprints Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/180vq83c9v-cor.