MLA
Rotograph Co. (New York, N.Y.). Coons in a rubber tree : six African American boys in a tree. 1904 approx.. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/003cz8w9jx-cor.
APA, 6th edition
Rotograph Co. (New York, N.Y.). (1904 approx.)[Coons in a rubber tree : six African American boys in a tree]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/003cz8w9jx-cor.
Chicago
Rotograph Co. (New York, N.Y.), Coons in a rubber tree : six African American boys in a tree, 1904 approx., Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/003cz8w9jx-cor.