Per-Pet
MLA
Kissinger, Henry, 1923-2023. Per-Pet. Box 491, folder 15. 1986-1987. https://collections.library.yale.edu/catalog/11778490.
APA, 6th edition
Kissinger, Henry, 1923-2023. (["Box 491, folder 15"])(1986-1987)[Per-Pet]. https://collections.library.yale.edu/catalog/11778490.