MLA

Thistlewood, Thomas, 1721-1786. 17. Diary. Box 3, folder 17. 1766. https://collections.library.yale.edu/catalog/12016953.

APA, 6th edition

Thistlewood, Thomas, 1721-1786. (["Box 3, folder 17"])(1766)[17. Diary]. https://collections.library.yale.edu/catalog/12016953.