MLA

Barrie, J. M. (James Matthew), 1860-1937. Typescript, initialed, with autograph revisions. Box 45, folder 963. circa 1917. https://collections.library.yale.edu/catalog/16662686.

APA, 6th edition

Barrie, J. M. (James Matthew), 1860-1937. (["Box 45, folder 963"])(circa 1917)[Typescript, initialed, with autograph revisions]. https://collections.library.yale.edu/catalog/16662686.