MLA
Carolina Card Co. (Asheville, N.C.). African American man and boy working on a sugarcane mill, with another boy holding the horse operating it [hand colored]. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3r4n-cor.
APA, 6th edition
Carolina Card Co. (Asheville, N.C.). (unknown)[African American man and boy working on a sugarcane mill, with another boy holding the horse operating it [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3r4n-cor.
Chicago
Carolina Card Co. (Asheville, N.C.), African American man and boy working on a sugarcane mill, with another boy holding the horse operating it [hand colored], unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/1439zw3r4n-cor.