MLA

Kissinger, Henry, 1923-2023. Namibia. Box 213, folder 6. 1997. https://collections.library.yale.edu/catalog/12481467.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 213, folder 6"])(1997)[Namibia]. https://collections.library.yale.edu/catalog/12481467.