MLA
Memphis Paper Co. (Memphis, Tenn.). Field of cotton in bloom : African American men picking cotton with bags over their shoulders, with a man on horseback nearby with two baskets of cotton in front of them [hand colored]. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/228ncjsxq2-cor.
APA, 6th edition
Memphis Paper Co. (Memphis, Tenn.). (unknown)[Field of cotton in bloom : African American men picking cotton with bags over their shoulders, with a man on horseback nearby with two baskets of cotton in front of them [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/228ncjsxq2-cor.
Chicago
Memphis Paper Co. (Memphis, Tenn.), Field of cotton in bloom : African American men picking cotton with bags over their shoulders, with a man on horseback nearby with two baskets of cotton in front of them [hand colored], unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/228ncjsxq2-cor.