MLA
Oval Picture of an African American Man with a Mustache in a Suit. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/849t1g1k02-cor.
APA, 6th edition
Oval picture of an African American man with a mustache in a suit (Box 73). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/849t1g1k02-cor.
Chicago
“Oval Picture of an African American Man with a Mustache in a Suit.” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 73. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/849t1g1k02-cor.