MLA

Saarinen, Eero, 1910-1961. "Organic Design" furniture for competition at the Museum of Modern Art: Heywood-Wakefield series. Box 88, folder 163. undated. https://collections.library.yale.edu/catalog/10017216.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 88, folder 163"])(undated)["Organic Design" furniture for competition at the Museum of Modern Art: Heywood-Wakefield series]. https://collections.library.yale.edu/catalog/10017216.