5Argyris C. Understanding Organizational Behavior. London. Tavisrock Publications, 1960.
6Levinson H, Price C R, Manden K J, etal Men, management and mental health, Cambridge Harvard University Press, 1962.
7Kotter J P. The Psychological contract managing the joining-up process. California man- agement review. 1973, 15:91-99.
8Robinson S L, Rousseau D M. Violating the psychological contract: Not the exception but the norm. Journal of Organizational Behavior. 1994, 15 (3): 245-259.
9MacNeil. I. R, Relational Contract: What We Do and Do Not Know, Wisconsin Law Re-view, 1985:28.