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