MLA
A Black Man on a Donkey : with Other Men, Women and Children Standing in Front of a Building. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 75. https://digital.library.emory.edu/purl/863fxpnvxq-cor.
APA, 6th edition
A black man on a donkey : with other men, women and children standing in front of a building (Box 75). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/863fxpnvxq-cor.
Chicago
“A Black Man on a Donkey : with Other Men, Women and Children Standing in Front of a Building.” 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/863fxpnvxq-cor.