ماخذ: Teaching Music through Performance in Choir, Vol. 3. Philip Brunelle. 618 pages. Published by GIA Publications. GI.G-7522.
ترجمه: آموزش موسیقی از طریق عملکرد در گروه کر، جلد. 3. Teaching Music through Performance in Choir, Vol. 3 music Education. ISBN 9781579997533.