MLA

Erdoes, Richard, 1912-2008. Sun Dance Winner 1967. Box 67 | Sundances Sioux. 1967-1991, undated. https://collections.library.yale.edu/catalog/2092979.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 67 | Sundances Sioux"])(1967-1991, undated)[Sun Dance Winner 1967]. https://collections.library.yale.edu/catalog/2092979.