MLA

Erdoes, Richard, 1912-2008. Crow Dog Sun Dance 1971 medium. Box 67 | Sundances Sioux. 1971, undated. https://collections.library.yale.edu/catalog/2092748.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 67 | Sundances Sioux"])(1971, undated)[Crow Dog Sun Dance 1971 medium]. https://collections.library.yale.edu/catalog/2092748.