MLA

Saarinen, Eero, 1910-1961. Architectural record sepias. Box 413 | Box 414. undated. https://collections.library.yale.edu/catalog/10187427.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 413 | Box 414"])(undated)[Architectural record sepias]. https://collections.library.yale.edu/catalog/10187427.