Cite

Hoppe, A. J.

MLA

Van Thal, Herbert, 1904-1983. Hoppe, A. J.. Box 1, folder 61. 1941 Sep 5. https://collections.library.yale.edu/catalog/16545965.

APA, 6th edition

Van Thal, Herbert, 1904-1983. (["Box 1, folder 61"])(1941 Sep 5)[Hoppe, A. J.]. https://collections.library.yale.edu/catalog/16545965.