1. Kano, N.(1987) “Total Quality Creation”, Proceeding of International Conference for Quality Control’ 87—Tokyo, p.p. 143–148
2. Kano, N., Seraku, N., Takahashi, F, Tsuji, S. (1984): “Attractive Quality vs. Must—Be” Quality, Hinshitsu (Journal of Japanese Society for Quality Control), Vol. 14, No. 2, pp. 147-156. (in Japanese)
3. Aristotle. “Metaphysics” (Japanese translation M. Tanaka(1979), “Aristotle” Chuo—Koron Sha, pp.394–395)
4. Locke, John(1690) An Essay Concerning Human Understanding (Japanese translation H. Otsuki ed. (1980) “Locke and Hume”, Chuo—Koron Sha, pp. 90, 91)
5. Shewhart, W. A. (1931) “Economic Control of Quality of Manufactured Product”, (D., Van Nostrand Company, Inc.), pp. 53–54 (Japanese translation F. Shirozaki(1951): “Economical QC of Industrial Products,” JSA(Japanese Standards Association) pp.51–52)