Cite

Music/Exercises/"Auflösungen aus dem Mollakkord"

MLA

Koch, Frederick R. (Frederick Robinson). Music/Exercises/"Auflösungen aus dem Mollakkord". Box 346, folder 2058. 1928 Nov 20. https://collections.library.yale.edu/catalog/2043686.

APA, 6th edition

Koch, Frederick R. (Frederick Robinson). (["Box 346, folder 2058"])(1928 Nov 20)[Music/Exercises/"Auflösungen aus dem Mollakkord"]. https://collections.library.yale.edu/catalog/2043686.