MLA
Man Preaching to a Large Crowd of Men and Women on the Edge of a River. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 33. https://digital.library.emory.edu/purl/515bcc2fwc-cor.
APA, 6th edition
Man preaching to a large crowd of men and women on the edge of a river (Box 33). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/515bcc2fwc-cor.
Chicago
“Man Preaching to a Large Crowd of Men and Women on the Edge of a River.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 33. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/515bcc2fwc-cor.