1. Ash, C., & Huebner, E. S. (2001). Environmental events and life satisfaction reports of adolescents: A test of cognitive mediation. School Psychology International, 22, 320–336. doi: 10.1177/0143034301223008 .
2. Berkman, L. F., Glass, T., Brissette, I., & Seeman, T. E. (2000). From social integration to health: Durkheim in the new millennium. Social Science and Medicine, 51, 843–857. doi: 10.1016/S0277-9536(00)00065-4 .
3. Centers for Disease Control, Prevention (CDC). (2000). Measuring healthy days: Population assessment of health-related quality of life. Atlanta, GA: CDC.
4. Census and Statistics Department. (2007a). Table 2.5: School population by sex and age group. Hong Kong 2006 population by-census main tables. Hong Kong: Hong Kong Government Press.
5. Census and Statistics Department. (2007b). Table 1.6: Population by sex and age group and birthplace. Hong Kong 2006 population by-census main tables. Hong Kong: Hong Kong Government Press.