APA (7th ed.) Citation

Bach, J. S., Wummer, J., & Valenti, F. Eight sonatas. Westminster WAL 216.

Chicago Style (17th ed.) Citation

Bach, Johann Sebastian, John Wummer, and Fernando Valenti. Eight Sonatas. s.l: Westminster WAL 216.

MLA (9th ed.) Citation

Bach, Johann Sebastian, et al. Eight Sonatas. Westminster WAL 216.