MLA

Nettles, Bea, 1946-. XVII - Star. Box 1, folder 18. 1971 July. https://collections.library.yale.edu/catalog/33288396.

APA, 6th edition

Nettles, Bea, 1946-. (["Box 1, folder 18"])(1971 July)[XVII - Star]. https://collections.library.yale.edu/catalog/33288396.