MLA
Souvenir Post Card Co. (N.Y.). Nothing better : African American man with sliced watermelons. October 3, 1908. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/583kwh70wq-cor.
APA, 6th edition
Souvenir Post Card Co. (N.Y.). (October 3, 1908)[Nothing better : African American man with sliced watermelons]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/583kwh70wq-cor.
Chicago
Souvenir Post Card Co. (N.Y.), Nothing better : African American man with sliced watermelons, October 3, 1908, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/583kwh70wq-cor.