MLA
Two African American Women in Dresses Sitting on a Piano Bench, with One of Them Holding a Drink. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/477sn02v98-cor.
APA, 6th edition
Two African American women in dresses sitting on a piano bench, with one of them holding a drink (Box 73). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/477sn02v98-cor.
Chicago
“Two African American Women in Dresses Sitting on a Piano Bench, with One of Them Holding a Drink.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/477sn02v98-cor.