MLA

Kissinger, Henry, 1923-2023. Goldthwait, June. Box 150, folder 5. 1960 June-1962 February. https://collections.library.yale.edu/catalog/11784987.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 150, folder 5"])(1960 June-1962 February)[Goldthwait, June]. https://collections.library.yale.edu/catalog/11784987.