MLA

Stein, Leo, 1872-1947. Dewey. Quest for Certainty, holograph notes. Box 10, folder 216. n.d.. https://collections.library.yale.edu/catalog/17155345.

APA, 6th edition

Stein, Leo, 1872-1947. (["Box 10, folder 216"])(n.d.)[Dewey. Quest for Certainty, holograph notes]. https://collections.library.yale.edu/catalog/17155345.