MLA

Erdoes, Richard, 1912-2008. "Copper & Mica Artifacts". Box 53. 1980-1997, undated. https://collections.library.yale.edu/catalog/2082815.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 53"])(1980-1997, undated)["Copper & Mica Artifacts"]. https://collections.library.yale.edu/catalog/2082815.