1. Ashcraft, M. H., & Kirk, E. P. (2001). The relationships among working memory, math anxiety, and performance. Journal of Experimental Psychology: General, 130(2), 224–237. doi:10.1037//0096-3445.130.2.224. 2. Brown, M. (2004). Illuminating Patterns of Perception : An Overview of Q Methodology, (October). 3. Brown, S.R. (1980). Political subjectivity: Applications of Q methodology in political science. Yale University Press. 4. Brown, S. R. (1993). A primer on Q methodology [Data file]. Operant subjectivity. 16, 91-138. Diperoleh daripada http://facstaff.uww.edu/cottlec/QArchive/qindex.htm. 5. Carini, R. M., Kuh, G. D., & Klein, S. P. (2006). Student Engagement and Student Learning: Testing the Linkages. Research in Higher Education. 47(1), pp. 1-24. 6. Finn, J. D. (1989). Withdrawing From School. Review of Educational Research, Vol 59 (2), 117-142. 7. Fredricks, J. a, Blumenfeld, P. C., & Paris, a. H. (2004). School Engagement: Potential of the Concept, State of the Evidence. Review of Educational Research, 74(1), 59–109. doi:10.3102/00346543074001059. 8. Hembree, R. (1990). The nature, effects, and relief of mathematics anxiety. Journal for Research in Mathematics Education, 21, 33-46. 9. Kementerian Pelajaran Malaysia. (2012b). Kementerian Pelajaran Malaysia. (2012b). Laporan Awal. Pelan Pembangunan Pendidikan Malaysia 2013-2025. Diperoleh daripada http://www.ukm.my/permatapintar/wp-content/uploads/2014/01/ theblueprint-bm.pdf. 10. Kong, Q.-P., Wong, N.-Y., & Lam, C.-C. (2003). Student engagement in mathematics: Development of instrument and validation of construct. Mathematics Education Research Journal. doi:10.1007/BF03217366. 11. Kuh, G. D. & Hu, S. (2001). The effects of student Faculty Interaction in the 1990s. Review of Higher Education. 24(3), pp. 309-332. 12. Kuh, G. D., Kinzie, J., Buckley, J. A., Bridges, B. K., & Hayek, J. C. (2007). Piecing Together the Student Success Puzzle: Research, Propositions, and Recommendations. ASHE Higher Education Report, Vol 32, No 5. San Francisco: Jossey-Bass. 13. Lawson, M. a., & Lawson, H. a. (2013). New Conceptual Frameworks for Student Engagement Research, Policy, and Practice. Review of Educational Research (Vol. 83, pp. 432–479). doi:10.3102/0034654313480891. 14. McKeown B., & Thomas D. B. (2013). Q Methodology (Second Edition). USA: Sage Publications Inc. 15. National Council of Teachers of Mathematics. (1989). Curriculum and evaluation standards for school mathematics Reston, VA: Author. 16. Newmann, F. M., Wehlage, G.G., & Lamborn, S. D. (1992). The significance and sources of student engagement. In F. M. Newmann (Ed.), Student engagement and achievement in America secondary school (pp. 11-39). New York: Teachers College Press. 17. Schmolck, P., & Atkinson, J. (2012). PQMethod (Version 2.33) [Computer Softwaere]. Retrieved from http://qmethod.org/links. 18. Smith, N.W. (2001). Current system in psychology: History, theory, research, and applications. Wadsworth. 19. Watts, S., & Stenner, P. (2012). Doing Q Methodological Research: Theory, Method and Interpretation. London, Thousand Oaks CA, New Delhi, Singapore: Sage Publications