Cite

Young, P. B.

MLA

Dunbar, Rudolph, 1899-1988. Young, P. B.. Box 1, folder 33. 1939. https://collections.library.yale.edu/catalog/17029235.

APA, 6th edition

Dunbar, Rudolph, 1899-1988. (["Box 1, folder 33"])(1939)[Young, P. B.]. https://collections.library.yale.edu/catalog/17029235.