MLA

Edwards, Jonathan, 1703-1758. II SAM. 23:5: "That the covenant of grace is every way so ordered as is needful in order to its being made firm and sure" (p. 5). Box 1, folder 77. n.d.. https://collections.library.yale.edu/catalog/10606463.

APA, 6th edition

Edwards, Jonathan, 1703-1758. (["Box 1, folder 77"])(n.d.)[II SAM. 23:5: "That the covenant of grace is every way so ordered as is needful in order to its being made firm and sure" (p. 5)]. https://collections.library.yale.edu/catalog/10606463.