APA (7th ed.) Citation

Haydn, J., Beethoven, L. v., Schumann, R., & Klotz, L. (1999). Haydn, Beethoven, Schumann. Lukas Klotz.

Chicago Style (17th ed.) Citation

Haydn, Joseph, Ludwig van Beethoven, Robert Schumann, and Lukas Klotz. Haydn, Beethoven, Schumann. Regensburg: Lukas Klotz, 1999.

MLA (9th ed.) Citation

Haydn, Joseph, et al. Haydn, Beethoven, Schumann. Lukas Klotz, 1999.