MLA

Kissinger, Henry, 1923-2023. Nixon, Richard-statement analysis. Box 226, folder 5. 1968. https://collections.library.yale.edu/catalog/11786203.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 226, folder 5"])(1968)[Nixon, Richard-statement analysis]. https://collections.library.yale.edu/catalog/11786203.