MLA
Portrait of Gilbert Holland of Show Boat Co. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 9. https://digital.library.emory.edu/purl/897kprr544-cor.
APA, 6th edition
Portrait of Gilbert Holland of Show Boat Co. (Box 9). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr544-cor.
Chicago
“Portrait of Gilbert Holland of Show Boat Co.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 9. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/897kprr544-cor.