MLA

Koch, Frederick R. (Frederick Robinson). Music/Title Music for BBC Shakespeare Series. Box 340, folder 1990. [1977]. https://collections.library.yale.edu/catalog/2032099.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 340, folder 1990"])([1977])[Music/Title Music for BBC Shakespeare Series]. https://collections.library.yale.edu/catalog/2032099.