MLA
African American Men Holding Different Instruments, Posing on a Sidewalk. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 23. https://digital.library.emory.edu/purl/477sn02vb6-cor.
APA, 6th edition
African American men holding different instruments, posing on a sidewalk (Box 23). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/477sn02vb6-cor.
Chicago
“African American Men Holding Different Instruments, Posing on a Sidewalk.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 23. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/477sn02vb6-cor.