MLA

Kissinger, Henry, 1923-2023. Schelling, Thomas C., "The Strategy of Conflict: Prospectus for a Reorientation of Game Theory," Journal of Conflict Resolution. Box 291, folder 12. 1958 September. https://collections.library.yale.edu/catalog/11787261.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 291, folder 12"])(1958 September)[Schelling, Thomas C., "The Strategy of Conflict: Prospectus for a Reorientation of Game Theory," Journal of Conflict Resolution]. https://collections.library.yale.edu/catalog/11787261.