MLA

Kissinger, Henry, 1923-2023. Auspitz, Josiah Lee. Box 6, folder 2. 1968. https://collections.library.yale.edu/catalog/11782364.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 6, folder 2"])(1968)[Auspitz, Josiah Lee]. https://collections.library.yale.edu/catalog/11782364.