MLA

Cox, Christopher, 1949-1990. Word processing information, and computer disk labeled "Bill resume/video/ memory". Box 44, folder 692. 1983, undated. https://collections.library.yale.edu/catalog/10171434.

APA, 6th edition

Cox, Christopher, 1949-1990. (["Box 44, folder 692"])(1983, undated)[Word processing information, and computer disk labeled "Bill resume/video/ memory"]. https://collections.library.yale.edu/catalog/10171434.