"S" General
MLA
Douglas, Norman, 1868-1952. "S" General. Box 45. 1942-1947. https://collections.library.yale.edu/catalog/16454757.
APA, 6th edition
Douglas, Norman, 1868-1952. (["Box 45"])(1942-1947)["S" General]. https://collections.library.yale.edu/catalog/16454757.