MLA
Edinger. Portrait of John Allen. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 62. https://digital.library.emory.edu/purl/6451g1jwxc-cor.
APA, 6th edition
E. Portrait of John Allen (Box 62) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6451g1jwxc-cor.
Chicago
Edinger. “Portrait of John Allen.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 62. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6451g1jwxc-cor.