1. Aldwell, Edward & Carl Schachter. 1989. Harmony and Voice Leading. 2nd edition. New York: Harcourt, Brace Jovanovich.
2. Baker, M.C. 2001. The Atoms of Language. New York: Basic Books.
3. Maximally Smooth Cycles, Hexatonic Systems, and the Analysis of Late-Romantic Triadic Progressions
4. :Tonal Pitch Space
5. Forte, Allen. 1973. The Structure of Atonal Music. New Haven: Yale University Press.