MLA
Silverio Leon, an African American Baby Boy, Sitting on a Chair. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 71. https://digital.library.emory.edu/purl/99351c5b2h-cor.
APA, 6th edition
Silverio Leon, an African American baby boy, sitting on a chair (Box 71). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/99351c5b2h-cor.
Chicago
“Silverio Leon, an African American Baby Boy, Sitting on a Chair.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 71. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/99351c5b2h-cor.