MLA

Saarinen, Eero, 1910-1961. Architectural sepias. Box 333 | Box 335 | Box 334. undated. https://collections.library.yale.edu/catalog/32219267.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 333 | Box 335 | Box 334"])(undated)[Architectural sepias]. https://collections.library.yale.edu/catalog/32219267.