Originál: Movable Tonic. A Sequenced Sight-Singing Method Student Book composed by Alan McClung. Published by GIA Publications.
Preklad: Pohyblivá Tonic. A Sequenced Sight-Singing Method Student Book. Pohyblivá Tonic. Inštruktážne. 200 strán. Vydal GIA Publikácie. GI.G-7028A.