Mesa Verde Colo. Spruce Tree House
MLA
Erdoes, Richard, 1912-2008. Mesa Verde Colo. Spruce Tree House. Box 49 | Anasazi Ruins, Arizona, Colorado, included: Tonto, Montezuma, Mesa Verde, Aztec. 1991, undated. https://collections.library.yale.edu/catalog/2079673.
APA, 6th edition
Erdoes, Richard, 1912-2008. (["Box 49 | Anasazi Ruins, Arizona, Colorado, included: Tonto, Montezuma, Mesa Verde, Aztec"])(1991, undated)[Mesa Verde Colo. Spruce Tree House]. https://collections.library.yale.edu/catalog/2079673.