MLA
Engraving of Confederate General Robert E. Lee, Published by Southern Press. Southern Press. Stuart A. Rose Manuscript, Archives, and Rare Book Library, OP10, Folder 4. https://digital.library.emory.edu/purl/122v41nt7q-cor.
APA, 6th edition
Engraving of Confederate General Robert E. Lee, published by Southern Press (OP10, Folder 4). [Engravings (prints)]. Southern Press; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/122v41nt7q-cor.
Chicago
“Engraving of Confederate General Robert E. Lee, Published by Southern Press.” Engravings (prints). Civil War Collection. Baltimore, MD: Southern Press, n.d. OP10, Folder 4. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/122v41nt7q-cor.