MLA
Unknown 12-String Guitar Player, 1918. 1918. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 22. https://digital.library.emory.edu/purl/436tx95xb0-cor.
APA, 6th edition
Unknown 12-string guitar player, 1918 (Box 22). (1918). [Black-and-white photographs]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/436tx95xb0-cor.
Chicago
“Unknown 12-String Guitar Player, 1918.” Black-and-white photographs. Robert Langmuir African American Photograph Collection, 1918. Box 22. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/436tx95xb0-cor.