MLA

Kissinger, Henry, 1923-2023. Chapter outline. Box 260, folder 9. Circa 1955-circa 1957. https://collections.library.yale.edu/catalog/11786737.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 260, folder 9"])(Circa 1955-circa 1957)[Chapter outline]. https://collections.library.yale.edu/catalog/11786737.