MLA
Engraving of "President Lincoln and Family Circle," Published by J. Hoover. J. Hoover. Stuart A. Rose Manuscript, Archives, and Rare Book Library, OP23. https://digital.library.emory.edu/purl/020fttf063-cor.
APA, 6th edition
Engraving of "President Lincoln and Family Circle," published by J. Hoover (OP23). [Engravings (prints)]. J. Hoover; Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/020fttf063-cor.
Chicago
“Engraving of ‘President Lincoln and Family Circle," Published by J. Hoover.” Engravings (prints). Civil War Collection. Philadelphia, PA: J. Hoover, n.d. OP23. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/020fttf063-cor.