APA (7th ed.) Citation

New Leipzig Bach Collegium Musicum, Guttler, L., & Pommer, M. (1990). The Trumpet. Delta Music.

Chicago Style (17th ed.) Citation

New Leipzig Bach Collegium Musicum, Ludwig Guttler, and Max Pommer. The Trumpet. Los Angeles, Calif: Delta Music, 1990.

MLA (9th ed.) Citation

New Leipzig Bach Collegium Musicum, et al. The Trumpet. Delta Music, 1990.