1. Adams, V.: 1973, An Introduction to Modern English Word-Formation, Longman, London.
2. Adelson, B.: 1985, ‘Comparing Natural and Abstract Categories: A Case Study from Computer Science’, Cognitive Science 9, 417–30.
3. Armstrong, S. L., L. R. Gleitman, and H. Gleitman: 1983, ‘What Some Concepts Might Not Be’, Cognition 13, 263–308.
4. Berlin, B. and P. Kay: 1969, Basic Color Terms: Their Universality and Evolution, University of California Press, Berkeley.
5. Bloomfield, L.: 1933, Language, 11th British ed., G. Allen and Unwin, London, 1970.