MLA

Saarinen, Eero, 1910-1961. Rendering. Box 370, folder 994. undated. https://collections.library.yale.edu/catalog/10017659.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 370, folder 994"])(undated)[Rendering]. https://collections.library.yale.edu/catalog/10017659.