MLA

Kissinger, Henry, 1923-2023. Kennedy Institute Study Group on Relations between the United States and Western Europe. Box 105, folder 4. 1967-1968. https://collections.library.yale.edu/catalog/11784202.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 105, folder 4"])(1967-1968)[Kennedy Institute Study Group on Relations between the United States and Western Europe]. https://collections.library.yale.edu/catalog/11784202.