MLA

Kissinger, Henry, 1923-2023. ABC Issues and Answers. Box 212, folder 2. 1968 October. https://collections.library.yale.edu/catalog/11786013.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 212, folder 2"])(1968 October)[ABC Issues and Answers]. https://collections.library.yale.edu/catalog/11786013.