Cite

Pictographs, Rio Grande

MLA

Erdoes, Richard, 1912-2008. Pictographs, Rio Grande. Box 57 | Petroglyphs, New Mexico. 1979-1989, undated. https://collections.library.yale.edu/catalog/2085570.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 57 | Petroglyphs, New Mexico"])(1979-1989, undated)[Pictographs, Rio Grande]. https://collections.library.yale.edu/catalog/2085570.