1. Aristotle. The Ethics of Aristotle: The Nicomachean Ethics. Penguin Classics. Aristotle. The Ethics of Aristotle: The Nicomachean Ethics. Penguin Classics.
2. Babbie E. (1986) The Practice of Social Research. 4th ed. Wadsworth Publishing Co. Babbie E. (1986) The Practice of Social Research. 4th ed. Wadsworth Publishing Co.
3. Brod C. (1984) Technostress: The Human Cost of the Computer Revolution. Addison-Wesley. Brod C. (1984) Technostress: The Human Cost of the Computer Revolution. Addison-Wesley.
4. Cascio W.F. (1989) Managing Human Resources: Productivity Quality of Work Life Profits. McGraw-Hill Publishing Company. Cascio W.F. (1989) Managing Human Resources: Productivity Quality of Work Life Profits. McGraw-Hill Publishing Company.
5. Csikszentmihalyi M. (1990) Flow: The Psychology of Optimal Experience. Csikszentmihalyi M. (1990) Flow: The Psychology of Optimal Experience.