MLA

Saarinen, Eero, 1910-1961. Publications. Box 136, folder 255. 1951,1952, 1956, undated. https://collections.library.yale.edu/catalog/10017585.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 136, folder 255"])(1951,1952, 1956, undated)[Publications]. https://collections.library.yale.edu/catalog/10017585.