MLA
C. T. Photochrom (Chicago, Ill.). Cotton pickers at work on Southern Plantation : five African American men picking cotton with two baskets of cotton and a man on horseback [hand colored]. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/757np5hqgd-cor.
APA, 6th edition
C. T. Photochrom (Chicago, Ill.). (unknown)[Cotton pickers at work on Southern Plantation : five African American men picking cotton with two baskets of cotton and a man on horseback [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/757np5hqgd-cor.
Chicago
C. T. Photochrom (Chicago, Ill.), Cotton pickers at work on Southern Plantation : five African American men picking cotton with two baskets of cotton and a man on horseback [hand colored], unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/757np5hqgd-cor.