Hamzah, Shahidah, Fauziah Ani, Harliana Halim, Shamsaadal Sholeh Saad, Siti Sarawati Johar, Zahrul Akmal Damin, Lutfan Jaes, and Muhammad Nubli Abdul Wahab. “A Study on the Effect of Stroop Test on the Formation of Students Discipline by Using the Heart Rate Variability (HRV) Technique”. International Journal of Engineering & Technology 7, no. 4.9 (October 2, 2018): 178–181. Accessed December 22, 2024. https://sciencepubco.com/index.php/ijet/article/view/20668.