Cite

"Canyon de Chelly Pictographs"

MLA

Erdoes, Richard, 1912-2008. "Canyon de Chelly Pictographs". Box 56. 1977-1988, undated. https://collections.library.yale.edu/catalog/2084847.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 56"])(1977-1988, undated)["Canyon de Chelly Pictographs"]. https://collections.library.yale.edu/catalog/2084847.