Inventories and documents concerning Karl Weigl's papers
MLA
Weigl, Karl, 1881-1949. Inventories and documents concerning Karl Weigl's papers. Box 30, folder 1022. 1980-1986, n.d.. https://collections.library.yale.edu/catalog/32212343.
APA, 6th edition
Weigl, Karl, 1881-1949. (["Box 30, folder 1022"])(1980-1986, n.d.)[Inventories and documents concerning Karl Weigl's papers]. https://collections.library.yale.edu/catalog/32212343.