MLA
African American Man Sittin on a Bale of Cotton on a Horse-Drawn Cart, with Four Other Men Standing by a Bale Suspended on Wheels, in Front of a Fence. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/436tx95x90-cor.
APA, 6th edition
African American man sittin on a bale of cotton on a horse-drawn cart, with four other men standing by a bale suspended on wheels, in front of a fence (Box 68). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/436tx95x90-cor.
Chicago
“African American Man Sittin on a Bale of Cotton on a Horse-Drawn Cart, with Four Other Men Standing by a Bale Suspended on Wheels, in Front of a Fence.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/436tx95x90-cor.