MLA

Malinowski, Bronislaw, 1884-1942. Krause, Fritz. Box 4, folder 338, reel 3 | reel 3U. 1930-1931. https://collections.library.yale.edu/catalog/32502244.

APA, 6th edition

Malinowski, Bronislaw, 1884-1942. (["Box 4, folder 338, reel 3 | reel 3U"])(1930-1931)[Krause, Fritz]. https://collections.library.yale.edu/catalog/32502244.