MLA
A Prize Winner : an African American Man Holding a Turkey by the Feet. 1909. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 69. https://digital.library.emory.edu/purl/634sj3txdm-cor.
APA, 6th edition
A prize winner : an African American man holding a turkey by the feet (Box 69). (1909). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/634sj3txdm-cor.
Chicago
“A Prize Winner : an African American Man Holding a Turkey by the Feet.” Postcards. Robert Langmuir African American Photograph Collection, 1909. Box 69. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/634sj3txdm-cor.