MLA

Saarinen, Eero, 1910-1961. Candid office photographs. Box 7, folder 76. 1957, undated. https://collections.library.yale.edu/catalog/10016207.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 7, folder 76"])(1957, undated)[Candid office photographs]. https://collections.library.yale.edu/catalog/10016207.