"Additions....Second Edition" (M 146)
MLA
Boswell, James, 1740-1795. "Additions....Second Edition" (M 146). Box 57, folder 1201. 1755-1795. https://collections.library.yale.edu/catalog/2039225.
APA, 6th edition
Boswell, James, 1740-1795. (["Box 57, folder 1201"])(1755-1795)["Additions....Second Edition" (M 146)]. https://collections.library.yale.edu/catalog/2039225.