K. Hamzah, I. Waini, R. M. Said, N. H. Miswan, N. A. Zainal, and A. Ahmad, “Self-Confidence in Mathematics: A case Study on Engineering Technology Students in FTK, UTeM”, Int J Innov Educ Res, vol. 2, no. 11, pp. 10–13, Nov. 2014, doi: 10.31686/ijier.vol2.iss11.262.