MLA
Studio., Simmons. Twenty People Dressed Nicely, Some Sitting. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 13. https://digital.library.emory.edu/purl/610wpzgn0p-cor.
APA, 6th edition
Studio., S. Twenty people dressed nicely, some sitting (Box 13) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgn0p-cor.
Chicago
Studio., Simmons. “Twenty People Dressed Nicely, Some Sitting.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 13. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgn0p-cor.