MLA
Portrait of a Man in a Suit with a Mustache and a Woman in a Dress with Bows in Her Hair and a Bow on Her Dress. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 8. https://digital.library.emory.edu/purl/556931zcz1-cor.
APA, 6th edition
Portrait of a man in a suit with a mustache and a woman in a dress with bows in her hair and a bow on her dress (Box 8). [Card photographs (photographs)]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/556931zcz1-cor.
Chicago
“Portrait of a Man in a Suit with a Mustache and a Woman in a Dress with Bows in Her Hair and a Bow on Her Dress.” 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/556931zcz1-cor.