MLA
Adolph Selige Pub. Co. (St. Louis, Mo.). Men operating a sugarcane grinding machine being pulled by a horse, with a man and woman watching in the background [hand colored]. unknown. Robert Langmuir African American Photograph Collection. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/955m905qkh-cor.
APA, 6th edition
Adolph Selige Pub. Co. (St. Louis, Mo.). (unknown)[Men operating a sugarcane grinding machine being pulled by a horse, with a man and woman watching in the background [hand colored]]. Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/955m905qkh-cor.
Chicago
Adolph Selige Pub. Co. (St. Louis, Mo.), Men operating a sugarcane grinding machine being pulled by a horse, with a man and woman watching in the background [hand colored], unknown, Robert Langmuir African American Photograph Collection, Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/955m905qkh-cor.