MLA
National Art Views Co. (N.Y.). A lonely meal : an African American man sitting at a table eating, outside a log cabin. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/747dr7sqxm-cor.
APA, 6th edition
National Art Views Co. (N.Y.). (unknown)[A lonely meal : an African American man sitting at a table eating, outside a log cabin]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/747dr7sqxm-cor.
Chicago
National Art Views Co. (N.Y.), A lonely meal : an African American man sitting at a table eating, outside a log cabin, unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/747dr7sqxm-cor.