Bourgeois, D. (1990). Bone of contention: Studies for trombone ; medium - difficult [opus 112] (Bass clef edition.). Brass Wind Publications.
Chicago-Zitierstil (17. Ausg.)Bourgeois, Derek. Bone of Contention: Studies for Trombone ; Medium - Difficult [opus 112]. Bass clef edition. Manton, Oakham, UK: Brass Wind Publications, 1990.
MLA-Zitierstil (8. Ausg.)Bourgeois, Derek. Bone of Contention: Studies for Trombone ; Medium - Difficult [opus 112]. Bass clef edition. Brass Wind Publications, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.