Original tekst: Twelve studies for the piano. Paris, Troupenas, 1838 - Autograph manuscript. Opus 26 - 2nd suite, Paris 1838 and autograph MS.
Oversættelse: Tolv studier for klaver. Paris, Troupenas 1838 - Autograph manuskript. Opus 26 - 2. suite, Paris 1838 og autograf MS. Paris 1838.