1997
MLA
Richards, Lloyd, 1919-2006. 1997. Box 113, folder 1279-1285. 1997. https://collections.library.yale.edu/catalog/16238336.
APA, 6th edition
Richards, Lloyd, 1919-2006. (["Box 113, folder 1279-1285"])(1997)[1997]. https://collections.library.yale.edu/catalog/16238336.