APA (7th ed.) Citation

Hartmann, K. A., Hartmann, K. A., & Hartmann, K. A. (1999). Symphony no. 1. In-Akustik.

Chicago Style (17th ed.) Citation

Hartmann, Karl Amadeus, Karl Amadeus Hartmann, and Karl Amadeus Hartmann. Symphony No. 1. Ballrechten-Dottingen: In-Akustik, 1999.

MLA (9th ed.) Citation

Hartmann, Karl Amadeus, et al. Symphony No. 1. In-Akustik, 1999.