MLA
Picture from Allen G. Langston to Friend Johanson. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 19. https://digital.library.emory.edu/purl/081wdbrvbc-cor.
APA, 6th edition
Picture from Allen G. Langston to friend Johanson (Box 19). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/081wdbrvbc-cor.
Chicago
“Picture from Allen G. Langston to Friend Johanson.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, n.d. Box 19. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/081wdbrvbc-cor.