7World Health Organization. WHOQOL--BREF introduction, administration, scoring and generic version of the assessment [J]. Geneva : WHO, 1996.
8Kaigang Li. Noy S, Kay Nattiporn Nokkaew. The Performance of the World Health Organization's WHOQOL- BREF in Assessing the Quality of Life of Thai College Students[J]. Soc Indic Res, 2009.90:489-501.
9Thompson E, Davis III&.Robert E, Nida&Kimberly R, Zlomke&Marie S, Nebel- Schwalm. Health - Related Quality of Life in College Undergraduates with Learning Disabilities: The Mediational Roles of Anxiety and Sadness[J].J Psychopathol Behay Assess, 2009,31 . 228-234.
10Ogbun WF. Social changes in 1928[J]. American Journal of Sociology,1929, 34(5): 6
