MLA

Kilpatrick, Jack Frederick (1915-1967). Chant. Box 14, folder 1259. undated. https://collections.library.yale.edu/catalog/15530893.

APA, 6th edition

Kilpatrick, Jack Frederick (1915-1967). (["Box 14, folder 1259"])(undated)[Chant]. https://collections.library.yale.edu/catalog/15530893.