MLA

Herbst, Josephine, 1892-1969. Rukeyser, Muriel. Box 22. 1941-1943, undated. https://collections.library.yale.edu/catalog/11460231.

APA, 6th edition

Herbst, Josephine, 1892-1969. (["Box 22"])(1941-1943, undated)[Rukeyser, Muriel]. https://collections.library.yale.edu/catalog/11460231.