1. Aldenderfer, M. S., & Blashfield, R. K. (1984). Cluster analysis. Beverly Hills, CA: Sage.
2. Ames, C. (1984). Competitive, co-operative, and individualistic goal structures: A motivational analysis. In R. Ames, & C. Ames (Eds.), Research on motivation in education: student motivation (pp. 177–207). New York: Academic Press.
3. Classrooms: Goals, structures, and student motivation;Ames;Journal of Educational Psychology,1992
4. Bentler, P. M. (1995). EQS Structural equations program manual. Encino, CA: Multivariate Software.
5. Development of scales to measure perceived physical education class climate: A cross-national project;Biddle;British Journal of Educational Psychology,1995