Cite

"Reflections of an Era", by John A. Kouwenhoven

MLA

Saarinen, Eero, 1910-1961. "Reflections of an Era", by John A. Kouwenhoven. Box 376, folder 1048. undated. https://collections.library.yale.edu/catalog/10017702.

APA, 6th edition

Saarinen, Eero, 1910-1961. (["Box 376, folder 1048"])(undated)["Reflections of an Era", by John A. Kouwenhoven]. https://collections.library.yale.edu/catalog/10017702.