Chopin, F. (1989). Etudes. BMG Music.
Cita Chicago (17th ed.)Chopin, Frederic. Etudes. New York: BMG Music, 1989.
Cita MLA (9th ed.)Chopin, Frederic. Etudes. BMG Music, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)