Original tekst: Piano Sonatinas And Standard Study Works. by C.P.E. and J.S. Bach, Bartók, Beethoven. Version 2.0. Various. Piano Method sheet music.
Oversættelse: Piano Sonatinas og Standard Study Works. af C.P.E. og J.S. Bach, Bartók, Beethoven. 6 Små klaverstykker, op. 19. Forskellige.