Cite

List on a small card, with numbers

MLA

Kilpatrick, Jack Frederick (1915-1967). List on a small card, with numbers. Box 1, folder 6. undated. https://collections.library.yale.edu/catalog/15491316.

APA, 6th edition

Kilpatrick, Jack Frederick (1915-1967). (["Box 1, folder 6"])(undated)[List on a small card, with numbers]. https://collections.library.yale.edu/catalog/15491316.