Cita APA (7th ed.)

Beethoven, L. v., Bülow, H. v., & Lebert, S. Sonatas for the piano. G. Schirmer.

Cita Chicago (17th ed.)

Beethoven, Ludwig van, Hans von Bülow, i Sigmund Lebert. Sonatas for the Piano. New York: G. Schirmer.

Cita MLA (9th ed.)

Beethoven, Ludwig van, et al. Sonatas for the Piano. G. Schirmer.