Cite

"A Concise Primer on the New Poetry"

MLA

Williams, William Carlos, 1883-1963. "A Concise Primer on the New Poetry". Box 38, folder 997. before 1950. https://collections.library.yale.edu/catalog/17049574.

APA, 6th edition

Williams, William Carlos, 1883-1963. (["Box 38, folder 997"])(before 1950)["A Concise Primer on the New Poetry"]. https://collections.library.yale.edu/catalog/17049574.