MLA

Edwards, Jonathan, 1703-1758. I COR. 10:16: "The thing designed by the sacrament of the Lord's Supper is the communion of Christians in the body and blood of Christ" (p. 4). Box 10, folder 730. n.d.. https://collections.library.yale.edu/catalog/10699972.

APA, 6th edition

Edwards, Jonathan, 1703-1758. (["Box 10, folder 730"])(n.d.)[I COR. 10:16: "The thing designed by the sacrament of the Lord's Supper is the communion of Christians in the body and blood of Christ" (p. 4)]. https://collections.library.yale.edu/catalog/10699972.