MLA
The Belle Davis Trio, an African American Woman, Girl and Boy, Dancing. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/4644qrfjbp-cor.
APA, 6th edition
The Belle Davis Trio, an African American woman, girl and boy, dancing (Box 70). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4644qrfjbp-cor.
Chicago
“The Belle Davis Trio, an African American Woman, Girl and Boy, Dancing.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4644qrfjbp-cor.