1. Maslow A. Motivation and Personality. N.Y, Harper. USA, 1954
2. Principles of Scientific Managment;Taylor,1947
3. Fagerström J & Kjellberg A. A Human Factors Framework for Design and Evaluation of Industrial Working Conditions. Presented at and printed in Proceeding of the 32nd CIRP International Seminar on Manufacturing Systems. Editors Van Brussels, Kruth and Lauwers, Katolieke Universiteit, Leuven, Belgium, 1999.
4. Belbin M. Team Roles at Work, 1993
5. Sohlenius G, Hådeby H & Kjellberg A. Conscious Production - New Requirements on Machine Tool Design. 6th IMEC, Osaka, Japan, 1994.