Canyon de Chelly Petroglyphs
MLA
Erdoes, Richard, 1912-2008. Canyon de Chelly Petroglyphs. Box 56 | Arizona, Utah Petroglyphs Quaray [Quarry], My Indian Film Strip Art New Glyphs. 1975-1986, undated. https://collections.library.yale.edu/catalog/2084795.
APA, 6th edition
Erdoes, Richard, 1912-2008. (["Box 56 | Arizona, Utah Petroglyphs Quaray [Quarry], My Indian Film Strip Art New Glyphs"])(1975-1986, undated)[Canyon de Chelly Petroglyphs]. https://collections.library.yale.edu/catalog/2084795.