MLA

Kissinger, Henry, 1923-2023. Chapter V. Box 268, folder 6. 1964 December 21. https://collections.library.yale.edu/catalog/11786830.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 268, folder 6"])(1964 December 21)[Chapter V]. https://collections.library.yale.edu/catalog/11786830.