MLA
A Young Man Sitting in a Cart with a Donkey, next to a Stream and Bushes : with a Watertower behind Him. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 75. https://digital.library.emory.edu/purl/180vq83bkb-cor.
APA, 6th edition
A young man sitting in a cart with a donkey, next to a stream and bushes : with a watertower behind him (Box 75). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/180vq83bkb-cor.
Chicago
“A Young Man Sitting in a Cart with a Donkey, next to a Stream and Bushes : with a Watertower behind Him.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 75. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/180vq83bkb-cor.