MLA

Kissinger, Henry, 1923-2023. "A New Approach to International Relations," Wisconsin State University-Eau Claire. Box 253, folder 5. 1967 winter. https://collections.library.yale.edu/catalog/11786616.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 253, folder 5"])(1967 winter)["A New Approach to International Relations," Wisconsin State University-Eau Claire]. https://collections.library.yale.edu/catalog/11786616.