Helms, Siegmund
Neues Lexikon der Musikpadagogik : Personteil
Kassel: Gustav Bosse, 1994, 272 p.
Cummings, David M.
McIntire, Dennis K.
International who's who in music and musician's directory
(in the classical and light classical fields)
Twelfth edition 1990/91
Consultant editors David M. Cummings; Dennis K. McIntire
Cambridge, England: International Who's Who in Music, 1991
Sadie, Stanley
The new Grove dictionary of music and musicians
Hayden, Andrew
British hymn writers and composers
A check-list
Croydon, England: Hymn Society of Great Britain & Ireland, 1977