MLA
Souvenir Post Card Co. (N.Y.). Coons : five African American boys on a bench. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/740ksn02xd-cor.
APA, 6th edition
Souvenir Post Card Co. (N.Y.). (unknown)[Coons : five African American boys on a bench]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/740ksn02xd-cor.
Chicago
Souvenir Post Card Co. (N.Y.), Coons : five African American boys on a bench, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/740ksn02xd-cor.