MLA

White, Edmund, 1940-. White, Edmund. Box 24. 1970-1980, undated. https://collections.library.yale.edu/catalog/2013503.

APA, 6th edition

White, Edmund, 1940-. (["Box 24"])(1970-1980, undated)[White, Edmund]. https://collections.library.yale.edu/catalog/2013503.