Izvornik: FingerTips With a Touch of Theory, Book 3. black key major scales, triads, and cadences. Piano Method sheet music. Lewis. Strickland.
Prijevod: Ruke s dozom teorije, knjiga 3. Klavir Metoda note. Piano Solo note. Ruke s dozom teorije, Book 3 skladao Cobb. Klin dizač. Za glasovirom.