MLA
African American Girl Standing with Her Hands Resting on a Hand-Railing, with a Small Flag Draped in Front of Her, While Wearing a Bow in Her Hair. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/692t4b8gx7-cor.
APA, 6th edition
African American girl standing with her hands resting on a hand-railing, with a small flag draped in front of her, while wearing a bow in her hair (Box 73). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/692t4b8gx7-cor.
Chicago
“African American Girl Standing with Her Hands Resting on a Hand-Railing, with a Small Flag Draped in Front of Her, While Wearing a Bow in Her Hair.” 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/692t4b8gx7-cor.