MLA

Edwards, Jonathan, 1703-1758. ALS. Box 22, folder 1275. 1749 Dec 6. https://collections.library.yale.edu/catalog/10900903.

APA, 6th edition

Edwards, Jonathan, 1703-1758. (["Box 22, folder 1275"])(1749 Dec 6)[ALS]. https://collections.library.yale.edu/catalog/10900903.