MLA
Studio., Hilton. Two African American Girls in Matching Dresses and Hats, with One Sitting on a Stool. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/409j3tx97z-cor.
APA, 6th edition
Studio., H. Two African American girls in matching dresses and hats, with one sitting on a stool (Box 73) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/409j3tx97z-cor.
Chicago
Studio., Hilton. “Two African American Girls in Matching Dresses and Hats, with One Sitting on a Stool.” 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/409j3tx97z-cor.