Cite

"Leonard with Purple Shirt and Vernona"

MLA

Erdoes, Richard, 1912-2008. "Leonard with Purple Shirt and Vernona". Box 74. 1969-1975, undated. https://collections.library.yale.edu/catalog/2097546.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 74"])(1969-1975, undated)["Leonard with Purple Shirt and Vernona"]. https://collections.library.yale.edu/catalog/2097546.