1. The problem of generations;Mannheim;Psychoanal. Rev.,1970
2. Inglehart, R. (1977). The Silent Revolution: Changing Values and Political Styles among Western Publics, Princeton University Press.
3. Strauss, B., Strauss, W., and Howe, N. (1991). Generations: The History of America’s Future, 1584 to 2069, Morrow.
4. Multigeneration Employees: Strategies for Effective Management;Kupperschmidt;Health Care Manag.,2000
5. Generational Differences in Work-Related Attitudes: A Meta-analysis;Costanza;J. Bus. Psychol.,2012