1. Aristotle: 1980, The Nicomachean Ethics. D. Ross, trans. (Oxford University Press, Oxford).
2. Ashford S., Lee C., Bobko P. (1989) Content, Causes and Consequences of Job Insecurity: A Theory-based Measure and Substantive Test. Academy of Management Journal 32(4):803–829
3. Bardwick J. (1995) Danger in the Comfort Zone. AMACOM, NY
4. Berman E., Bowman J., West J., Van Wart M. (2006) Human Resource Management in Public Service: Paradoxes, Problems, and Processes, 2nd edition. Sage Publications, Thousand Oaks, CA
5. Berman E., West J. (2003) Psychological Contracts in Local Government: A Preliminary Survey. Review of Public Personnel Administration 23(4):267–285