MLA

Kissinger, Henry, 1923-2023. European Studies Seminar. Box 125, folder 2. 1962-1963. https://collections.library.yale.edu/catalog/11784523.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 125, folder 2"])(1962-1963)[European Studies Seminar]. https://collections.library.yale.edu/catalog/11784523.