Cite

"Procession medium"

MLA

Erdoes, Richard, 1912-2008. "Procession medium". Box 66. 1978-1981, undated. https://collections.library.yale.edu/catalog/2091717.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 66"])(1978-1981, undated)["Procession medium"]. https://collections.library.yale.edu/catalog/2091717.