MLA

Saarinen, Eero, 1910-1961. Construction. Box 370, folder 986. 1960, undated. https://collections.library.yale.edu/catalog/10017691.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 370, folder 986"])(1960, undated)[Construction]. https://collections.library.yale.edu/catalog/10017691.