Hamzah S, Ani F, Halim H, Sholeh Saad S, Sarawati Johar S, Akmal Damin Z, et al. A Study on the Effect of Stroop Test on the Formation of Students Discipline by Using the Heart Rate Variability (HRV) Technique. IJET [Internet]. 2018 Aug. 14 [cited 2024 Dec. 3];7(3.25):640-3. Available from: https://sciencepubco.com/index.php/ijet/article/view/17815