Dyah Kusumastuti. Reward or Punishment: Its Influence to Enhance Students’ Self Efficacy in English Learning Process. ALTICS [Internet]. 30 November 2020 [dikutip 17 Mei 2024];2(2):109-15. Tersedia pada: https://e-journal.unper.ac.id/index.php/ALTICS/article/view/1097