MLA
Winston Dressed in a Suit and Hat Standing with His Arm around a Woman in a Dress, Coat and Hat Standing in Front of Curtains. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 8. https://digital.library.emory.edu/purl/170msbcc6p-cor.
APA, 6th edition
Winston dressed in a suit and hat standing with his arm around a woman in a dress, coat and hat standing in front of curtains (Box 8). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/170msbcc6p-cor.
Chicago
“Winston Dressed in a Suit and Hat Standing with His Arm around a Woman in a Dress, Coat and Hat Standing in Front of Curtains.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 8. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/170msbcc6p-cor.