MLA

Erdoes, Richard, 1912-2008. "Children". Box 72. 1977, undated. https://collections.library.yale.edu/catalog/2096147.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 72"])(1977, undated)["Children"]. https://collections.library.yale.edu/catalog/2096147.