APA (7th ed.) Citation

Busoni, F., & Beaumont, A. (1987). Selected letters. Columbia University Press.

Chicago Style (17th ed.) Citation

Busoni, Ferruccio, and Antony Beaumont. Selected Letters. New York: Columbia University Press, 1987.

MLA (9th ed.) Citation

Busoni, Ferruccio, and Antony Beaumont. Selected Letters. Columbia University Press, 1987.