"American Red Cross Relief Unit Report"
MLA
Johnson, William Richard, 1878-1967. "American Red Cross Relief Unit Report". 28, folder 21. 1941. https://collections.library.yale.edu/catalog/33524526.
APA, 6th edition
Johnson, William Richard, 1878-1967. (["28, folder 21"])(1941)["American Red Cross Relief Unit Report"]. https://collections.library.yale.edu/catalog/33524526.