Izvornik: Piano Sonata No. 4, Op. 128. Extremely positive in nature' has been said to describe the character of Piano Sonata No. 4, Op. 128.
Prijevod: Piano Sonata br 4, opus 128. NFMC. Dianne Goolkasian Rahbee. Piano Solo note. Napredan. Piano Sonata br 4, opus 128. NFMC. 1938 -.