MLA

Sackville-West, V. (Victoria), 1892-1962. Letters. Box 2, folder 24-39. 1919. https://collections.library.yale.edu/catalog/10589485.

APA, 6th edition

Sackville-West, V. (Victoria), 1892-1962. (["Box 2, folder 24-39"])(1919)[Letters]. https://collections.library.yale.edu/catalog/10589485.