1. James Murray Barbour,Tuning and Temperament: A Historical Survey, second ed., Michigan State College Press, Lansing, MI, 1953.
2. Easley Blackwood,The Structure of Recognizable Diatonic Tunings, Princeton Univ. Press, Princeton, NJ, 1985.
3. Eric Blom (ed.),Grove's Dictionary of Music and Musicians, fifth ed., St. Martin's Press, Inc., New York, NY, 1955.