MLA

Saarinen, Eero, 1910-1961. Sitework record sepias. Box 419. undated. https://collections.library.yale.edu/catalog/10187431.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 419"])(undated)[Sitework record sepias]. https://collections.library.yale.edu/catalog/10187431.