MLA

Erdoes, Richard, 1912-2008. Late Indian Wars. Box 45 | Plains Indian History II. 1976, undated. https://collections.library.yale.edu/catalog/10256675.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 45 | Plains Indian History II"])(1976, undated)[Late Indian Wars]. https://collections.library.yale.edu/catalog/10256675.