Ray, Man
MLA
Dreier, Katherine S. (Katherine Sophie), 1877-1952. Ray, Man. Box 112, folder 2687-2690. 1919-49, n.d.. https://collections.library.yale.edu/catalog/2040544.
APA, 6th edition
Dreier, Katherine S. (Katherine Sophie), 1877-1952. (["Box 112, folder 2687-2690"])(1919-49, n.d.)[Ray, Man]. https://collections.library.yale.edu/catalog/2040544.