Helm, E. E. (1989). Thematic catalogue of the works of Carl Philipp Emanuel Bach: E. Eugene Helm. Yale University Press.
Chicago-referens (17:e uppl.)Helm, E. Eugene. Thematic Catalogue of the Works of Carl Philipp Emanuel Bach: E. Eugene Helm. New Haven [u.a.]: Yale University Press, 1989.
MLA-referens (8:e uppl.)Helm, E. Eugene. Thematic Catalogue of the Works of Carl Philipp Emanuel Bach: E. Eugene Helm. Yale University Press, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.