MLA
Studio., E. G. Barnhill. Picking Cotton in Florida. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/969866t1kp-cor.
APA, 6th edition
Studio., E. G. B. Picking cotton in Florida (Box 68) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/969866t1kp-cor.
Chicago
Studio., E. G. Barnhill. “Picking Cotton in Florida.” 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/969866t1kp-cor.