MLA
A Portrait of an Helen Snow. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 40. https://digital.library.emory.edu/purl/569z08kpx8-cor.
APA, 6th edition
A portrait of an Helen Snow (Box 40). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/569z08kpx8-cor.
Chicago
“A Portrait of an Helen Snow.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 40. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/569z08kpx8-cor.