MLA

Erdoes, Richard, 1912-2008. Vernal, Utah, Pictographs, Petroglyphs. Box 57 | Petroglyphs, New Mexico. 1966-1989, undated. https://collections.library.yale.edu/catalog/2085534.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 57 | Petroglyphs, New Mexico"])(1966-1989, undated)[Vernal, Utah, Pictographs, Petroglyphs]. https://collections.library.yale.edu/catalog/2085534.