MLA

McClintock, Walter, 1870-1949. 416. [Small Otter (A'monisi-koan), Grandson of Mad Wolf. Wearing Costume After his Father's Costume.]. Box 62, folder 3139. 1940. https://collections.library.yale.edu/catalog/2009221.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 62, folder 3139"])(1940)[416. [Small Otter (A'monisi-koan), Grandson of Mad Wolf. Wearing Costume After his Father's Costume.]]. https://collections.library.yale.edu/catalog/2009221.