List of titles
MLA
Wolff, Helen, 1906-1994. List of titles. Box 47, folder 1490. n.d.. https://collections.library.yale.edu/catalog/31907635.
APA, 6th edition
Wolff, Helen, 1906-1994. (["Box 47, folder 1490"])(n.d.)[List of titles]. https://collections.library.yale.edu/catalog/31907635.