MLA
Royal Photographic and Portrait Studio (Boston, Mass.). Elmer Chickering and the South African Kaffir Choir. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/467jq2bvt5-cor.
APA, 6th edition
Royal Photographic and Portrait Studio (Boston, Mass.). (unknown)[Elmer Chickering and the South African Kaffir Choir]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/467jq2bvt5-cor.
Chicago
Royal Photographic and Portrait Studio (Boston, Mass.), Elmer Chickering and the South African Kaffir Choir, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/467jq2bvt5-cor.