MLA
A Man Standing on a Boat, Which Is on Another Boat : with Other People and Boats in the Distance. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 75. https://digital.library.emory.edu/purl/972p5hqc0h-cor.
APA, 6th edition
A man standing on a boat, which is on another boat : with other people and boats in the distance (Box 75). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/972p5hqc0h-cor.
Chicago
“A Man Standing on a Boat, Which Is on Another Boat : with Other People and Boats in the Distance.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 75. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/972p5hqc0h-cor.