Cite

Music/"Valse de Faust"

MLA

Koch, Frederick R. (Frederick Robinson). Music/"Valse de Faust". Box 321, folder 1731. n.d.. https://collections.library.yale.edu/catalog/16601875.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 321, folder 1731"])(n.d.)[Music/"Valse de Faust"]. https://collections.library.yale.edu/catalog/16601875.