MLA
Chessler Co. (Baltimore, Md.). Transportation of cotton by road : an African American man holding a whip standing next to a wagon, loaded with cotton, being pulled by four oxen [hand colored]. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/996k0p2nm0-cor.
APA, 6th edition
Chessler Co. (Baltimore, Md.). (unknown)[Transportation of cotton by road : an African American man holding a whip standing next to a wagon, loaded with cotton, being pulled by four oxen [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/996k0p2nm0-cor.
Chicago
Chessler Co. (Baltimore, Md.), Transportation of cotton by road : an African American man holding a whip standing next to a wagon, loaded with cotton, being pulled by four oxen [hand colored], unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/996k0p2nm0-cor.