APA (7th ed.) Zitazioa
Heyman, B. B. (1994). Samuel Barber: The composer and his music. Oxford University Press.
Chicago Style (17th ed.) Zitazioa
Heyman, Barbara B. Samuel Barber: The Composer and His Music. New York ; Oxford: Oxford University Press, 1994.
MLA (9th ed.) Zitazioa
Heyman, Barbara B. Samuel Barber: The Composer and His Music. Oxford University Press, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.