Cite

Music/The Battle of Britain: other sections

MLA

Koch, Frederick R. (Frederick Robinson). Music/The Battle of Britain: other sections. Box 198, folder 1540. [1969]. https://collections.library.yale.edu/catalog/2033282.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 198, folder 1540"])([1969])[Music/The Battle of Britain: other sections]. https://collections.library.yale.edu/catalog/2033282.