Pischna, J. (1967). Technical studies sixty progressive exercises, containing studies on trills, scales, chords, passages and arpeggios for the piano. G. Schirmer.
Chicago-referens (17:e uppl.)Pischna, Johann. Technical Studies Sixty Progressive Exercises, Containing Studies on Trills, Scales, Chords, Passages and Arpeggios for the Piano. Milwaukee: G. Schirmer, 1967.
MLA-referens (9:e uppl.)Pischna, Johann. Technical Studies Sixty Progressive Exercises, Containing Studies on Trills, Scales, Chords, Passages and Arpeggios for the Piano. G. Schirmer, 1967.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.