"Corporal Thornton Wilder, 1918"
MLA
Wilder, Thornton, 1897-1975. "Corporal Thornton Wilder, 1918". Box 149, folder 3540. 1918. https://collections.library.yale.edu/catalog/16591970.
APA, 6th edition
Wilder, Thornton, 1897-1975. (["Box 149, folder 3540"])(1918)["Corporal Thornton Wilder, 1918"]. https://collections.library.yale.edu/catalog/16591970.