MLA

Amichai, Yehuda, 1924-2000. Others. Box 50, folder 1606. 1963, n.d.. https://collections.library.yale.edu/catalog/2005967.

APA, 6th edition

Amichai, Yehuda, 1924-2000. (["Box 50, folder 1606"])(1963, n.d.)[Others]. https://collections.library.yale.edu/catalog/2005967.