MLA
Artvue Post Card Co. (New York, N.Y.). Manual arts, Camp Atwater, East Brookfield, Mass. : African American men and boys sitting at a table doing arts and crafts. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/863fxpnw1z-cor.
APA, 6th edition
Artvue Post Card Co. (New York, N.Y.). (unknown)[Manual arts, Camp Atwater, East Brookfield, Mass. : African American men and boys sitting at a table doing arts and crafts]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/863fxpnw1z-cor.
Chicago
Artvue Post Card Co. (New York, N.Y.), Manual arts, Camp Atwater, East Brookfield, Mass. : African American men and boys sitting at a table doing arts and crafts, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/863fxpnw1z-cor.