MLA

Edwards, Jonathan, 1703-1758. 3. JE. Fragment of letter draft. On letter cover to Mrs. Esther Edwards at Northampton.. Box 1, folder 3. Undated. https://collections.library.yale.edu/catalog/33223748.

APA, 6th edition

Edwards, Jonathan, 1703-1758. (["Box 1, folder 3"])(Undated)[3. JE. Fragment of letter draft. On letter cover to Mrs. Esther Edwards at Northampton.]. https://collections.library.yale.edu/catalog/33223748.