APA (7th ed.) Citation

Hummel, J. N., Macudzinski, R., & Csiba, P. (1998). Chamber compositions. Opus.

Chicago Style (17th ed.) Citation

Hummel, Johann Nepomuk, Rudolf Macudzinski, and Peter Csiba. Chamber Compositions. Bratislava: Opus, 1998.

MLA (9th ed.) Citation

Hummel, Johann Nepomuk, et al. Chamber Compositions. Opus, 1998.