Cite

Music/Gesänge, op. 19a. Winterlied

MLA

Koch, Frederick R. (Frederick Robinson). Music/Gesänge, op. 19a. Winterlied. Box 327, folder 1813. n.d.. https://collections.library.yale.edu/catalog/2032840.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 327, folder 1813"])(n.d.)[Music/Gesänge, op. 19a. Winterlied]. https://collections.library.yale.edu/catalog/2032840.