Campbell, John, M.D. (C 748)
MLA
Boswell, James, 1740-1795. Campbell, John, M.D. (C 748). Box 19, folder 419. 1789. https://collections.library.yale.edu/catalog/32498224.
APA, 6th edition
Boswell, James, 1740-1795. (["Box 19, folder 419"])(1789)[Campbell, John, M.D. (C 748)]. https://collections.library.yale.edu/catalog/32498224.