Rujukan Konsonan

  1. Robert K. Barnhart, ed., Chambers Dictionary of Etymology, dahulunya diterbitkan sebagai The Barnhart Dictionary of Etymology, ©1988 The H.W. Wilson Company; Edinburgh, dicetak semula 2001: Chambers Harrap Publishers Ltd., p. 210.
  2. Plato, Cratylus 424 C; Theaetetus 203 B.
  3. R.H. Robins, A Short History of Linguistics, 2nd Ed.; ©1967 R.H. Robins, ©1979 Longman Group Ltd.; paper edition, 5th printing 1985, p. 23.