Izvornik: Scales for Young Violinists. introduce beginning double-stops in octaves, 3rds, and 6ths, remaining in first position. For Violin.
Prijevod: Vage za mlade violinista. uvesti početkom double-zaustavlja u oktavama, 3rds i 6ths, ostaje u prvoj poziciji. Barbara Barber. Knjiga.