MLA

Koch, Frederick R. (Frederick Robinson). Music/Cantique pour la fête de tous les saints. Box 322, folder 1738. [1857]. https://collections.library.yale.edu/catalog/2010309.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 322, folder 1738"])([1857])[Music/Cantique pour la fête de tous les saints]. https://collections.library.yale.edu/catalog/2010309.