1. Diamond, Jared (1991) The Third Chimpanzee (HarperCollins, New York). Korean translation in press: Munhak Sasang-sa, Seoul
2. Coe, Michael (1992). Breaking the Maya Code (Thames and Hudson, New York)
3. DeFrancis, John (1989). Visible Speech (University of HawaiiPress,Honolulu)
4. Diringer, David (1982). Writing (Thames and Hudson, London)
5. Gelb, IJ. (1963). A Study of Writing. (University of Chicago Press, Chicago)