MLA

Neville, Richard, 1941-2016. Martin Sharp material. Box 18 (Oversize). circa 1966. https://collections.library.yale.edu/catalog/16051924.

APA, 6th edition

Neville, Richard, 1941-2016. (["Box 18 (Oversize)"])(circa 1966)[Martin Sharp material]. https://collections.library.yale.edu/catalog/16051924.