MLA

Bryher, 1894-1983. Moore, Marianne. Box 114, folder 3999-4000. 1932, n.d.. https://collections.library.yale.edu/catalog/2011757.

APA, 6th edition

Bryher, 1894-1983. (["Box 114, folder 3999-4000"])(1932, n.d.)[Moore, Marianne]. https://collections.library.yale.edu/catalog/2011757.