MLA
A Line of African American Men Wearing Striped Clothing Carrying Hoes Standing on a Dirt Path through a Field with a Man on Horseback Wearing a Hat . Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 32. https://digital.library.emory.edu/purl/105s7h44ns-cor.
APA, 6th edition
A line of African American men wearing striped clothing carrying hoes standing on a dirt path through a field with a man on horseback wearing a hat (Box 32). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/105s7h44ns-cor.
Chicago
“A Line of African American Men Wearing Striped Clothing Carrying Hoes Standing on a Dirt Path through a Field with a Man on Horseback Wearing a Hat .” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 32. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/105s7h44ns-cor.