MLA

Stein, Gertrude, 1874-1946. Manuscript fragments (including "He sold his soul") and notes (including notes on program from "Don Juan," 1938 Feb 23). Box 16, folder 336. [1938]. https://collections.library.yale.edu/catalog/16190979.

APA, 6th edition

Stein, Gertrude, 1874-1946. (["Box 16, folder 336"])([1938])[Manuscript fragments (including "He sold his soul") and notes (including notes on program from "Don Juan," 1938 Feb 23)]. https://collections.library.yale.edu/catalog/16190979.