MLA
A Disagreement : Two African American Boys Fighting. 1907. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 72. https://digital.library.emory.edu/purl/556931zctx-cor.
APA, 6th edition
A disagreement : two African American boys fighting (Box 72). (1907). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/556931zctx-cor.
Chicago
“A Disagreement : Two African American Boys Fighting.” Postcards. Robert Langmuir African American Photograph Collection, 1907. Box 72. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/556931zctx-cor.