MLA

Thistlewood, Thomas, 1721-1786. 91. Navigational textbook. Box 11, folder 86. [1750s]. https://collections.library.yale.edu/catalog/14697843.

APA, 6th edition

Thistlewood, Thomas, 1721-1786. (["Box 11, folder 86"])([1750s])[91. Navigational textbook]. https://collections.library.yale.edu/catalog/14697843.