MLA

Schwartz, Delmore, 1913-1966. 1964 November-1965 June. Box 16, folder 683-714. 1964 November-1965 June. https://collections.library.yale.edu/catalog/2064473.

APA, 6th edition

Schwartz, Delmore, 1913-1966. (["Box 16, folder 683-714"])(1964 November-1965 June)[1964 November-1965 June]. https://collections.library.yale.edu/catalog/2064473.