MLA

Kissinger, Henry, 1923-2023. Home from Middle East shuttle. Box 228, folder 29. 1974 May 30. https://collections.library.yale.edu/catalog/12480263.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 228, folder 29"])(1974 May 30)[Home from Middle East shuttle]. https://collections.library.yale.edu/catalog/12480263.