MLA
Group Portrait of Three African American Boys Wearing Suits, in Front of an American Flag. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/6042rbnzx4-cor.
APA, 6th edition
Group portrait of three African American boys wearing suits, in front of an American flag (Box 71). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6042rbnzx4-cor.
Chicago
“Group Portrait of Three African American Boys Wearing Suits, in Front of an American Flag.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/6042rbnzx4-cor.