Cite

"Coppy [sic] of a letter from a young man to his Sister"

MLA

Edwards, Jonathan, 1703-1758. "Coppy [sic] of a letter from a young man to his Sister". Box 24a, folder 1391. n.d.. https://collections.library.yale.edu/catalog/10938716.

APA, 6th edition

Edwards, Jonathan, 1703-1758. (["Box 24a, folder 1391"])(n.d.)["Coppy [sic] of a letter from a young man to his Sister"]. https://collections.library.yale.edu/catalog/10938716.