Mohd Ariff Albakri, I. S., F. F. Rosli, N. Ismail, A. Omar, R. N. S. Raja Harun, and M. Ahmad. “Investigating Undergraduate Students’ Anxiety in Learning English”. Jurnal Peradaban Melayu, vol. 8, Nov. 2013, pp. 193-06, https://ejournal.upsi.edu.my/index.php/JPM/article/view/3246.