Gruen, G. (2007). Gypsy Music for C Instruments: A collection of tunes from Eastern Europe & the Balkans / by Gundula Gruen. Spartan Press Music Publ..
Chicago-referens (17:e uppl.)Gruen, Gundula. Gypsy Music for C Instruments: A Collection of Tunes from Eastern Europe & the Balkans / by Gundula Gruen. Kingussie, Scotland: Spartan Press Music Publ., 2007.
MLA-referens (8:e uppl.)Gruen, Gundula. Gypsy Music for C Instruments: A Collection of Tunes from Eastern Europe & the Balkans / by Gundula Gruen. Spartan Press Music Publ., 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.