MLA

Ford, Charles Henri, 1908-2002. Cocteau, Jean. Box 1, folder 36. 1946-47. https://collections.library.yale.edu/catalog/17124845.

APA, 6th edition

Ford, Charles Henri, 1908-2002. (["Box 1, folder 36"])(1946-47)[Cocteau, Jean]. https://collections.library.yale.edu/catalog/17124845.