MLA

Erdoes, Richard, 1912-2008. Anasazi Cliff Dwellers. Box 54 | Prehistory; Mound Builders. 1979-1980, undated. https://collections.library.yale.edu/catalog/2082970.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 54 | Prehistory; Mound Builders"])(1979-1980, undated)[Anasazi Cliff Dwellers]. https://collections.library.yale.edu/catalog/2082970.