Cite

"Modern Sand Painting"

MLA

Erdoes, Richard, 1912-2008. "Modern Sand Painting". Box 43. 1977, undated. https://collections.library.yale.edu/catalog/10251340.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 43"])(1977, undated)["Modern Sand Painting"]. https://collections.library.yale.edu/catalog/10251340.