MLA
Galleries, Brady's National Photographic Portrait. Union General Daniel Sickles. E. and H. T. Anthony, 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 22, Folder 43. https://digital.library.emory.edu/purl/252j6q588n-cor.
APA, 6th edition
Galleries, B. N. P. P. (1861). Union general Daniel Sickles (Box 22, Folder 43) [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/252j6q588n-cor.
Chicago
Galleries, Brady's National Photographic Portrait. “Union General Daniel Sickles.” Cartes-de-visite (card photographs). Civil War Collection. New York City, NY: E. and H. T. Anthony, 1861. Box 22, Folder 43. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/252j6q588n-cor.