MLA
Two Girls Sitting on Steps in Doorway Holding an American Flag. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 5. https://digital.library.emory.edu/purl/699n2z350g-cor.
APA, 6th edition
Two girls sitting on steps in doorway holding an American flag (Box 5). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z350g-cor.
Chicago
“Two Girls Sitting on Steps in Doorway Holding an American Flag.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 5. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/699n2z350g-cor.