MLA
African American Man Reading a Book in Front of a Crowd of Soldiers. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/883xsj3v0x-cor.
APA, 6th edition
African American man reading a book in front of a crowd of soldiers (Box 74). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/883xsj3v0x-cor.
Chicago
“African American Man Reading a Book in Front of a Crowd of Soldiers.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 74. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/883xsj3v0x-cor.