MLA
Chessler Co. (Baltimore, Md.). Picking cotton in the South : African American men and African American women picking cotton on the edge of a field with bags over their shoulders and two baskets of cotton and a pile 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/044bnzs7m6-cor.
APA, 6th edition
Chessler Co. (Baltimore, Md.). (unknown)[Picking cotton in the South : African American men and African American women picking cotton on the edge of a field with bags over their shoulders and two baskets of cotton and a pile 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/044bnzs7m6-cor.
Chicago
Chessler Co. (Baltimore, Md.), Picking cotton in the South : African American men and African American women picking cotton on the edge of a field with bags over their shoulders and two baskets of cotton and a pile 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/044bnzs7m6-cor.