संगीत शीट
असली
Schubert, Franz Peter. 4 Impromptus. D.899. Schubert, Franz Peter. Piano solo. Main sheet music. Impromptu No.3 version from Leipzig. Breitkopf & Härtel, 1888. Impromptu No.4 version from St. Louis. Art Publication Society, 1915.
अनुबाद
Schubert, फ्रांज पीटर. 4 Impromptus. D.899. Schubert, फ्रांज पीटर. पियानो सोलो. मुख्य शीट संगीत. Impromptu No.3 version from Leipzig. Breitkopf. Impromptu No.4 version from St. Louis. Art Publication Society, 1915.