Canyon Chelly Ruins 1991
MLA
Erdoes, Richard, 1912-2008. Canyon Chelly Ruins 1991. Box 48 | Anasazi Ruins, Arizona, Colorado, included: Tonto, Montezuma, Mesa Verde, Aztec. 1991, undated. https://collections.library.yale.edu/catalog/2079270.
APA, 6th edition
Erdoes, Richard, 1912-2008. (["Box 48 | Anasazi Ruins, Arizona, Colorado, included: Tonto, Montezuma, Mesa Verde, Aztec"])(1991, undated)[Canyon Chelly Ruins 1991]. https://collections.library.yale.edu/catalog/2079270.