MLA
Man Sitting with Child Wearing Cap and Holding a Toy Gun. 1959. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 11. https://digital.library.emory.edu/purl/969866t1p4-cor.
APA, 6th edition
Man sitting with child wearing cap and holding a toy gun (Box 11). (1959). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/969866t1p4-cor.
Chicago
“Man Sitting with Child Wearing Cap and Holding a Toy Gun.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, 1959. Box 11. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/969866t1p4-cor.