MLA

Kissinger, Henry, 1923-2023. Y. Box 299, folder 1. 1969-1976, undated. https://collections.library.yale.edu/catalog/11774468.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 299, folder 1"])(1969-1976, undated)[Y]. https://collections.library.yale.edu/catalog/11774468.