APA (7th ed.) Citation

Busoni, F., & Busoni, G. (1975). Letters to his wife. Da Capo Press.

Chicago Style (17th ed.) Citation

Busoni, Ferruccio, and Gerda Busoni. Letters to His Wife. New York: Da Capo Press, 1975.

MLA (8th ed.) Citation

Busoni, Ferruccio, and Gerda Busoni. Letters to His Wife. Da Capo Press, 1975.