MLA

Spence, Joseph, 1699-1768. Spence, Joseph, 1699-1768 2 ALS to Samuel Richardson (1689-1761), Byfleet, Berwick St. John. Box 2, folder 41. 1758. https://collections.library.yale.edu/catalog/10168613.

APA, 6th edition

Spence, Joseph, 1699-1768. (["Box 2, folder 41"])(1758)[Spence, Joseph, 1699-1768 2 ALS to Samuel Richardson (1689-1761), Byfleet, Berwick St. John]. https://collections.library.yale.edu/catalog/10168613.