Dyah Kusumastuti. “Reward or Punishment: Its Influence to Enhance Students’ Self Efficacy in English Learning Process”. Journal of Applied Linguistics (ALTICS) 2, no. 2 (November 30, 2020): 109–115. Accessed May 17, 2024. https://e-journal.unper.ac.id/index.php/ALTICS/article/view/1097.