MLA

O'Neill, Eugene, 1888-1953. A Moon for the Misbegotten. Early draft, holograph, corrected (in Series III). Box 142, folder 2525-2526. 1943 May 17. https://collections.library.yale.edu/catalog/2014178.

APA, 6th edition

O'Neill, Eugene, 1888-1953. (["Box 142, folder 2525-2526"])(1943 May 17)[A Moon for the Misbegotten. Early draft, holograph, corrected (in Series III)]. https://collections.library.yale.edu/catalog/2014178.