MLA

Saarinen, Eero, 1910-1961. Site plan - rendering. Box 540A. undated. https://collections.library.yale.edu/catalog/10021509.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 540A"])(undated)[Site plan - rendering]. https://collections.library.yale.edu/catalog/10021509.