MLA
The Gamblers : Two African American Boys Playing Cards. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 70. https://digital.library.emory.edu/purl/781jh9w10v-cor.
APA, 6th edition
The gamblers : two African American boys playing cards (Box 70). [Postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/781jh9w10v-cor.
Chicago
“The Gamblers : Two African American Boys Playing Cards.” Postcards. Robert Langmuir African American Photograph Collection, n.d. Box 70. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/781jh9w10v-cor.