Schubert, F., & Fortner, W. (1984). Instrumental-Spielbuch. Schott.
Chicago Style (17th ed.) CitationSchubert, Franz, and Wolfgang Fortner. Instrumental-Spielbuch. Mainz [u.a.]: Schott, 1984.
MLA (8th ed.) CitationSchubert, Franz, and Wolfgang Fortner. Instrumental-Spielbuch. Schott, 1984.
Warning: These citations may not always be 100% accurate.