MLA

Steinberg, Saul, 1914-1999. Art of Living: Three Women. Box 552 (Oversize), folder 7368. 1946. https://collections.library.yale.edu/catalog/33489204.

APA, 6th edition

Steinberg, Saul, 1914-1999. (["Box 552 (Oversize), folder 7368"])(1946)[Art of Living: Three Women]. https://collections.library.yale.edu/catalog/33489204.