MLA
Confederate General John Singleton Mosby. E. and H. T. Anthony, 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 17, Folder 6. https://digital.library.emory.edu/purl/535t76hfx1-cor.
APA, 6th edition
Confederate general John Singleton Mosby (Box 17, Folder 6). (1861). [Cartes-de-visite (card photographs)]. E. and H. T. Anthony; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/535t76hfx1-cor.
Chicago
“Confederate General John Singleton Mosby.” Cartes-de-visite (card photographs). Civil War Collection. New York City, NY: E. and H. T. Anthony, 1861. Box 17, Folder 6. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/535t76hfx1-cor.