APA (7th ed.) Citation

Chopin, F., & Schmidt, R. Prelude in C-Dur op. 28 Nr. 1.

Chicago Style (17th ed.) Citation

Chopin, Frédéric, and Rudolf Schmidt. Prelude in C-Dur Op. 28 Nr. 1.

MLA (9th ed.) Citation

Chopin, Frédéric, and Rudolf Schmidt. Prelude in C-Dur Op. 28 Nr. 1.

Warning: These citations may not always be 100% accurate.