MLA
Nine People Standing in Front of Hotel Douglas, with Two Automobiles in Frame. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 29. https://digital.library.emory.edu/purl/296wwpzgrm-cor.
APA, 6th edition
Nine people standing in front of Hotel Douglas, with two automobiles in frame (Box 29). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/296wwpzgrm-cor.
Chicago
“Nine People Standing in Front of Hotel Douglas, with Two Automobiles in Frame.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 29. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/296wwpzgrm-cor.