MLA

Bryher, 1894-1983. "F" general. Box 10, folder 426-427. 1924-78. https://collections.library.yale.edu/catalog/17290822.

APA, 6th edition

Bryher, 1894-1983. (["Box 10, folder 426-427"])(1924-78)["F" general]. https://collections.library.yale.edu/catalog/17290822.