MLA

Kissinger, Henry, 1923-2023. "Strategy and Foreign Policy," University of Southern California. Box 254, folder 17. Undated, circa 1955-circa 1968. https://collections.library.yale.edu/catalog/11786656.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 254, folder 17"])(Undated, circa 1955-circa 1968)["Strategy and Foreign Policy," University of Southern California]. https://collections.library.yale.edu/catalog/11786656.