MLA

Koch, Frederick R. (Frederick Robinson). Music/Laudate pueri Dominum, HWV 237. Box 257, folder 1599-1599f. [1707]. https://collections.library.yale.edu/catalog/2077185.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 257, folder 1599-1599f"])([1707])[Music/Laudate pueri Dominum, HWV 237]. https://collections.library.yale.edu/catalog/2077185.