Journal in London (J 102)
MLA
Boswell, James, 1740-1795. Journal in London (J 102). Box 46, folder 1020. 1787 Mar-Jun. https://collections.library.yale.edu/catalog/2039164.
APA, 6th edition
Boswell, James, 1740-1795. (["Box 46, folder 1020"])(1787 Mar-Jun)[Journal in London (J 102)]. https://collections.library.yale.edu/catalog/2039164.