1. When curriculum-based examinations are absent, what happens to academic standards, incentives, and achievement in the United States?;Bishop;International Journal of Educational Research,1995
2. The Shape of the River;Bowen,1998
3. Self-assessed skill needs and job performance;Cappelli,1997
4. Quality & Competency Based Education and Training;Chappell,1996
5. Chosun Newspaper (Jun., 23, 2003) Students’ Over-dependency on Private Tutoring. Korea.