MLA

Bryher, 1894-1983. Part IV: unidentified draft, typescript, original and carbon. With: notes, typescript. Box 89, folder 3293. ca. 1950, n.d.. https://collections.library.yale.edu/catalog/17290858.

APA, 6th edition

Bryher, 1894-1983. (["Box 89, folder 3293"])(ca. 1950, n.d.)[Part IV: unidentified draft, typescript, original and carbon. With: notes, typescript]. https://collections.library.yale.edu/catalog/17290858.