1. Abrami, P. C. (1995). Classroom connections: Understanding and using cooperative learning. Toronto: Harcourt Brace.
2. Applebee, A. N., Langer, J. A., & Mullis, I. V. (1989). Crossroads in American education: A summary of findings. Princeton, NJ: Educational Testing Service.
3. Bottoms, G., & Webb, L. D. (1998). Connecting the curriculum to “real life.” Breaking ranks: Making it happen (ERIC Document Reproduction Service No. ED434413). Reston, VA: National Association of Secondary School Principals.
4. Collins, A., Brown, J.S., & Newman, S.E. (1989). Cognitive apprenticeship: Teaching the crafts of reading, writing, and mathematics. In L. Resnick (Ed.), Knowledge, learning and instruction: Essays in honor of Robert Glaser (pp. 453–494). Hillsdale, NJ: Erlbaum.
5. Costello, E. J., Messer, S. C., Bird, H. R., Cohen, P., & Reinherz, H. Z. (1998). Prevalence of serious emotional disturbance: A re-analysis of community studies, Journal of Child and Family Studies, 7(4), 411–432.