MLA

Kissinger, Henry, 1923-2023. Brennan, D. G. and Johan J. Holst, "Ballistic Missile Defence: Two Views," Adelphi Papers. Box 285, folder 16. 1967 November. https://collections.library.yale.edu/catalog/11787122.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 285, folder 16"])(1967 November)[Brennan, D. G. and Johan J. Holst, "Ballistic Missile Defence: Two Views," Adelphi Papers]. https://collections.library.yale.edu/catalog/11787122.