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- Edward M Burns (1999). “Chapter 7: Intervals, Scales and Tuning”, Diana Deutsch, ed: The Psychology of Music, 2nd ed. Gulf Professional Publishing, pp. 215 ff. ISBN 0122135652. A detailed discussion of musical scales and pitches used in various cultures.
- Rudolf Rasch (2002). “Tuning and temperament”, Thomas Street Christensen, ed: The Cambridge History of Western Music Theory. Cambridge University Press. ISBN 0521623715. An historical run-down with technical descriptions of various Western tuning schemes.
- Jim Aikin (2004). A Player's Guide to Chords & Harmony: Music Theory for Real-World Musicians. Hal Leonard Corporation. ISBN 0879307986. A readable introduction to chords and temperament. Appendix B: The harmonic series & equal temperament, pp. 177 ff, is an excellent introduction to this topic. At time of writing, using Amazon's Look Inside feature this Appendix was available .
- Alexander John Ellis (1874). On musical duodenes, or the theory of constructing instruments with fixed tones in just or practically just intonation. Taylor and Francis. An historic discussion of temperament for twelve-tone scales by the translator of Helmholtz' On the sensations of tone as a physiological basis for the theory of music.
- Beatus Dominik Loeffler (2006). Instrument Timbres and Pitch Estimation in Polyphonic Music. This thesis for a masters degree in engineering at the Georgia Institute of Technology provides a clear introduction to its subject.