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- Gamer, Carleton . "Some Combinational Resources of Equal-Tempered Systems". Journal of Music Theory 11, no. 1 : 32–59. (en)
- Rushton, Julian . "Trichord". The New Grove Dictionary of Music and Musicians, second edition, edited by Stanley Sadie and John Tyrrell. London: Macmillan. (en)
- Babbitt, Milton . "Set Structure as a Compositional Determinant". Journal of Music Theory 5, no. 1 : 72–94. (en)
- Whittall, Arnold . The Cambridge Introduction to Serialism. New York: Cambridge University Press. . (en)
- Babbitt, Milton . "Twelve-Tone Invariants as Compositional Determinants ". In The Collected Essays of Milton Babbitt, edited by Stephen Peles, Stephen Dembski, Andrew Mead, and Joseph Straus, 55–69. Princeton: Princeton University Press. (en)
- Kastal'skii, Aleksandr Dmitrievich . Особенности народно-русской музыкальной системы [Properties of the Russian Folk Music System], edited by T. V. Popova. Moscow: Gosudarstvennoe muzykal'noe izdatel'stvo. (en)
- Houlahan, Mícheál, and Philip Tacka . Kodály Today: A Cognitive Approach to Elementary Music Education. Oxford and New York: Oxford University Press. . (en)
- Babbitt, Milton . "Some Aspects of Twelve-Tone Composition". The Score and I. M. A. Magazine, no. 12 : 53–61. (en)
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