MLA

Kissinger, Henry, 1923-2023. Mc. Box 439, folder 7. 1979-1981. https://collections.library.yale.edu/catalog/11777836.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 439, folder 7"])(1979-1981)[Mc]. https://collections.library.yale.edu/catalog/11777836.