MLA

Kirkup, James, 1918-2009. Die Wiedertäufer, proofs. Box 107, folder 995. 1967. https://collections.library.yale.edu/catalog/16620277.

APA, 6th edition

Kirkup, James, 1918-2009. (["Box 107, folder 995"])(1967)[Die Wiedertäufer, proofs]. https://collections.library.yale.edu/catalog/16620277.