Ballantine, C. J. (1970). Tradition and innovation in the twentieth century symphony. University of Cambridge.
Lua i Stíl Chicago (17ú heag.)Ballantine, Christopher John. Tradition and Innovation in the Twentieth Century Symphony. University of Cambridge, 1970.
Lua MLA (8ú heag.)Ballantine, Christopher John. Tradition and Innovation in the Twentieth Century Symphony. University of Cambridge, 1970.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.