Cite

Music/Exercises/"Sujet de Reber"

MLA

Koch, Frederick R. (Frederick Robinson). Music/Exercises/"Sujet de Reber". Box 332, folder 1891. 1900 May 31. https://collections.library.yale.edu/catalog/15947418.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 332, folder 1891"])(1900 May 31)[Music/Exercises/"Sujet de Reber"]. https://collections.library.yale.edu/catalog/15947418.