MLA
James Porter in a Suit, Hat and Bow Tie. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 73. https://digital.library.emory.edu/purl/351hhmgqqq-cor.
APA, 6th edition
James Porter in a suit, hat and bow tie (Box 73). [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/351hhmgqqq-cor.
Chicago
“James Porter in a Suit, Hat and Bow Tie.” 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/351hhmgqqq-cor.