MLA

Williams, William Carlos, 1883-1963. List of periodicals and books owned by Williams in Rutherford house. Box 72, folder 1519. undated. https://collections.library.yale.edu/catalog/17049612.

APA, 6th edition

Williams, William Carlos, 1883-1963. (["Box 72, folder 1519"])(undated)[List of periodicals and books owned by Williams in Rutherford house]. https://collections.library.yale.edu/catalog/17049612.