MLA

Bryher, 1894-1983. Pearson, Norman Holmes. Box 44, folder 1595-1628. 1964-67. https://collections.library.yale.edu/catalog/10094607.

APA, 6th edition

Bryher, 1894-1983. (["Box 44, folder 1595-1628"])(1964-67)[Pearson, Norman Holmes]. https://collections.library.yale.edu/catalog/10094607.