MLA

Erdoes, Richard, 1912-2008. "More Stereotype Kansas Indian". Box 53. 1980-1984, undated. https://collections.library.yale.edu/catalog/2082299.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 53"])(1980-1984, undated)["More Stereotype Kansas Indian"]. https://collections.library.yale.edu/catalog/2082299.