1. Al-Qasmi, A.S., 2006. Problem solving in biology at university level. Ph.D. Thesis. University of Glasgow, Glasgow.
2. Attitudes;Allport,1935
3. Peer interaction and the learning of critical thinking skills in further education students;Anderson;Instr. Sci.,2001
4. The Bologna Framework and National Qualifications Frameworks – An Introduction;Benelux Bologna Secretariat,2008
5. Bloomer, M., James, D., 2001. Cultures and learning in further education. Paper presented at the British Educational Research Association Annual Conference, University of Leeds, September 13–15, 2001.