MLA

Saarinen, Eero, 1910-1961. Intermediate scheme. Box 560, folder 1501. 1960. https://collections.library.yale.edu/catalog/10017226.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 560, folder 1501"])(1960)[Intermediate scheme]. https://collections.library.yale.edu/catalog/10017226.