MLA

Kissinger, Henry, 1923-2023. Ra. Box 579, folder 8. 1989-1990. https://collections.library.yale.edu/catalog/11779793.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 579, folder 8"])(1989-1990)[Ra]. https://collections.library.yale.edu/catalog/11779793.