Oorspronklik: Movable Tonic. A Sequenced Sight-Singing Method Student Book composed by Alan McClung. Published by GIA Publications.
Vertaling: Roerende Tonic. A Sequenced Sight-Singing Method Student Book. Roerende Tonic. Instruksionele. 200 bladsye. GI.G-7028A. ISBN 9781579996253.