MLA
Stepin Fetchit Seated on the Edge of a Water Trough Holding the Halter of a Horse. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 21. https://digital.library.emory.edu/purl/0859cnp5z2-cor.
APA, 6th edition
Stepin Fetchit seated on the edge of a water trough holding the halter of a horse (Box 21). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0859cnp5z2-cor.
Chicago
“Stepin Fetchit Seated on the Edge of a Water Trough Holding the Halter of a Horse.” Black-and-white photographs. Langmuir Deposit - Sept 2020, n.d. Box 21. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/0859cnp5z2-cor.