Cite

"Richard, Leonard’s oldest son"

MLA

Erdoes, Richard, 1912-2008. "Richard, Leonard’s oldest son". Box 50. 1971-1976, undated. https://collections.library.yale.edu/catalog/2080580.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 50"])(1971-1976, undated)["Richard, Leonard’s oldest son"]. https://collections.library.yale.edu/catalog/2080580.