APA (7th ed.) Citation

Busoni, F., Pfitzner, H., & Reger, M. (1987). String quartet no. 2 in D, op. 26. Outlet Book Co.

Chicago Style (17th ed.) Citation

Busoni, Ferruccio, Hans Pfitzner, and Max Reger. String Quartet No. 2 in D, Op. 26. New York, NY: Outlet Book Co, 1987.

MLA (9th ed.) Citation

Busoni, Ferruccio, et al. String Quartet No. 2 in D, Op. 26. Outlet Book Co, 1987.