MLA

Edwards, Jonathan, 1703-1758. 4. JE. Letter draft. On letter cover to JE at Stockbridge.. Box 1, folder 4. Undated. https://collections.library.yale.edu/catalog/33258960.

APA, 6th edition

Edwards, Jonathan, 1703-1758. (["Box 1, folder 4"])(Undated)[4. JE. Letter draft. On letter cover to JE at Stockbridge.]. https://collections.library.yale.edu/catalog/33258960.