MLA
Wolf., Heinz. Sonny Boy Williamson in Front of Microphone. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 3. https://digital.library.emory.edu/purl/699n2z350f-cor.
APA, 6th edition
Wolf., H. Sonny Boy Williamson in front of microphone (Box 3) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z350f-cor.
Chicago
Wolf., Heinz. “Sonny Boy Williamson in Front of Microphone.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 3. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z350f-cor.