ECCL. 12:1: "The time of youth is the best time to be improved to religious purposes" (p. 4)
MLA
Edwards, Jonathan, 1703-1758. ECCL. 12:1: "The time of youth is the best time to be improved to religious purposes" (p. 4). Box 4, folder 255. n.d.. https://collections.library.yale.edu/catalog/10691908.
APA, 6th edition
Edwards, Jonathan, 1703-1758. (["Box 4, folder 255"])(n.d.)[ECCL. 12:1: "The time of youth is the best time to be improved to religious purposes" (p. 4)]. https://collections.library.yale.edu/catalog/10691908.