MLA
McGabe. An African American Man, Holding a Hat and Cane, and Woman Wearing a Dress and Hat. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 61. https://digital.library.emory.edu/purl/610wpzgmwp-cor.
APA, 6th edition
M. G. An African American man, holding a hat and cane, and woman wearing a dress and hat (Box 61) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgmwp-cor.
Chicago
McGabe. “An African American Man, Holding a Hat and Cane, and Woman Wearing a Dress and Hat.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 61. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/610wpzgmwp-cor.