Oron, Aryeh (August 2007). "Agnes Zimmermann (Composer, Arranger)". Grove’s Dictionary of Music and Musicians (1952 Edition; Author: Sir George Grove). Archived from the original on 18 August 2010. Retrieved 27 September 2010.
Oron, Aryeh (August 2007). "Agnes Zimmermann (Composer, Arranger)". Grove’s Dictionary of Music and Musicians (1952 Edition; Author: Sir George Grove). Archived from the original on 18 August 2010. Retrieved 27 September 2010.