Cite

"Vernal, Utah, Pictographs, Petroglyphs"

MLA

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

APA, 6th edition

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