MLA
Hall, Ruben E. Portrait of Helen Curl Harris. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 2. https://digital.library.emory.edu/purl/679573n60t-cor.
APA, 6th edition
Hall, R. E. Portrait of Helen Curl Harris (Box 2) [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/679573n60t-cor.
Chicago
Hall, Ruben E. “Portrait of Helen Curl Harris.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 2. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/679573n60t-cor.