MLA
Danne. Portrait of an African American Woman in a Dress and an African American Man in a Suit with a Mustache. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 8. https://digital.library.emory.edu/purl/218dfn2z8v-cor.
APA, 6th edition
D. Portrait of an African American woman in a dress and an African American man in a suit with a mustache (Box 8) [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/218dfn2z8v-cor.
Chicago
Danne. “Portrait of an African American Woman in a Dress and an African American Man in a Suit with a Mustache.” Card photographs (photographs). Robert Langmuir African American Photograph Collection, n.d. Box 8. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/218dfn2z8v-cor.