MLA

Hemingway, Ernest, 1899-1961. Typescript photocopy, with proofreaders' marks. Box 1, folder 8. [ca. 1960]. https://collections.library.yale.edu/catalog/17201948.

APA, 6th edition

Hemingway, Ernest, 1899-1961. (["Box 1, folder 8"])([ca. 1960])[Typescript photocopy, with proofreaders' marks]. https://collections.library.yale.edu/catalog/17201948.