APA (7th ed.) Citation

Ries, F., & Ries, F. (2005). String quartets. CPO.

Chicago Style (17th ed.) Citation

Ries, Ferdinand, and Ferdinand Ries. String Quartets. Georgsmarienhütte: CPO, 2005.

MLA (9th ed.) Citation

Ries, Ferdinand, and Ferdinand Ries. String Quartets. CPO, 2005.

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