MLA

Kissinger, Henry, 1923-2023. Strategic trends meeting. Box 222, folder 3. 1967 January. https://collections.library.yale.edu/catalog/11786130.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 222, folder 3"])(1967 January)[Strategic trends meeting]. https://collections.library.yale.edu/catalog/11786130.