원본: Beginner's Exercise - op. Carl Czerny. 481. Hans-Günter Heumann. Schott Music GmbH & Co.. Piano Solo. Legacy Edition.
번역: 38 - Playing in thirds, sixths, other combinations - from 50 Beginner's Exercises Sheet Music by Carl Czerny. 칼 체르니. 피아노 솔로.