@book { author = {Horváth Balázs and Szigetvári Andrea}, title = {Timbre Solfege}, year = {2014}, publisher = {Typotex Kiadó}, isbn = {978 963 279 206 4}, URL = {https://edu.interkonyv.hu/konyvek/horvath-szigetvari-timbre-solfege/} }