MLA

Loy, Mina (1882-1966). "Brilliant Confusion of Brilliance". Box 5, folder 82. 1945 Sep. https://collections.library.yale.edu/catalog/11699204.

APA, 6th edition

Loy, Mina (1882-1966). (["Box 5, folder 82"])(1945 Sep)["Brilliant Confusion of Brilliance"]. https://collections.library.yale.edu/catalog/11699204.