MLA
Confederate General John Bankhead Magruder. E. and H. T. Anthony, 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 17, Folder 1. https://digital.library.emory.edu/purl/904dncjv4z-cor.
APA, 6th edition
Confederate general John Bankhead Magruder (Box 17, Folder 1). (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/904dncjv4z-cor.
Chicago
“Confederate General John Bankhead Magruder.” Cartes-de-visite (card photographs). Civil War Collection. New York City, NY: E. and H. T. Anthony, 1861. Box 17, Folder 1. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/904dncjv4z-cor.