MLA

Kissinger, Henry, 1923-2023. Fo. Box 310, folder 7. 1970-1973. https://collections.library.yale.edu/catalog/11774637.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 310, folder 7"])(1970-1973)[Fo]. https://collections.library.yale.edu/catalog/11774637.