MLA

Kissinger, Henry, 1923-2023. Sahay, Sachchidanand. Box 53, folder 13. 1962-1968. https://collections.library.yale.edu/catalog/11783397.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 53, folder 13"])(1962-1968)[Sahay, Sachchidanand]. https://collections.library.yale.edu/catalog/11783397.