Playbills
MLA
Wilder, Thornton, 1897-1975. Playbills. Box 82, folder 2120-2121. 1917-81, n.d.. https://collections.library.yale.edu/catalog/2041966.
APA, 6th edition
Wilder, Thornton, 1897-1975. (["Box 82, folder 2120-2121"])(1917-81, n.d.)[Playbills]. https://collections.library.yale.edu/catalog/2041966.