MLA

Gregory, Alyse, 1882-1967. Merrick, Frank. "J. R. A.," essay about John Redwood Anderson, typescript, carbon, with corrections. Box 69, folder 1164. n.d.. https://collections.library.yale.edu/catalog/17072598.

APA, 6th edition

Gregory, Alyse, 1882-1967. (["Box 69, folder 1164"])(n.d.)[Merrick, Frank. "J. R. A.," essay about John Redwood Anderson, typescript, carbon, with corrections]. https://collections.library.yale.edu/catalog/17072598.