MLA

Edwards, Jonathan, 1703-1758. Material probably used in writing the treatise, in a notebook composed of pages of Arnauld's De la fréquente communion, incomplete, pages numbered by Edwards 35-40, 65-66, and 79-100. Box 21, folder 1241. n.d.. https://collections.library.yale.edu/catalog/10690865.

APA, 6th edition

Edwards, Jonathan, 1703-1758. (["Box 21, folder 1241"])(n.d.)[Material probably used in writing the treatise, in a notebook composed of pages of Arnauld's De la fréquente communion, incomplete, pages numbered by Edwards 35-40, 65-66, and 79-100]. https://collections.library.yale.edu/catalog/10690865.