APA (7th ed.) Citation

Hindemith, P., Enescu, G., Martinů, B., & Koetsier, J. (1991). Trumpet & piano. Thorofon.

Chicago Style (17th ed.) Citation

Hindemith, Paul, George Enescu, Bohuslav Martinů, and Jan Koetsier. Trumpet & Piano. Hannover: Thorofon, 1991.

MLA (9th ed.) Citation

Hindemith, Paul, et al. Trumpet & Piano. Thorofon, 1991.