MLA
Two African American Boys Boxing, with Two Boys Outside of the Ring and an African American Man Supervising. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 74. https://digital.library.emory.edu/purl/730bvq83dp-cor.
APA, 6th edition
Two African American boys boxing, with two boys outside of the ring and an African American man supervising (Box 74). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/730bvq83dp-cor.
Chicago
“Two African American Boys Boxing, with Two Boys Outside of the Ring and an African American Man Supervising.” 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/730bvq83dp-cor.