MLA

Erdoes, Richard, 1912-2008. "Animals". Box 58. 1975-1992, undated. https://collections.library.yale.edu/catalog/2085863.

APA, 6th edition

Erdoes, Richard, 1912-2008. (["Box 58"])(1975-1992, undated)["Animals"]. https://collections.library.yale.edu/catalog/2085863.