MLA

Dunbar, Rudolph, 1899-1988. Driberg, Tom. Box 1, folder 11. 1965. https://collections.library.yale.edu/catalog/17029230.

APA, 6th edition

Dunbar, Rudolph, 1899-1988. (["Box 1, folder 11"])(1965)[Driberg, Tom]. https://collections.library.yale.edu/catalog/17029230.