@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/}
}