Cite

Notebook, "Diagram book"

MLA

Stein, Gertrude, 1874-1946. Notebook, "Diagram book". Box 37, folder 761. n.d.. https://collections.library.yale.edu/catalog/2025603.

APA, 6th edition

Stein, Gertrude, 1874-1946. (["Box 37, folder 761"])(n.d.)[Notebook, "Diagram book"]. https://collections.library.yale.edu/catalog/2025603.