Karnalim, Oscar, and Mewati Ayub. “The Effectiveness of a Program Visualization Tool on Introductory Programming: A Case Study With PythonTutor”. CommIT (Communication and Information Technology) Journal 11, no. 2 (October 31, 2017): 67-76. Accessed April 2, 2025. https://journal.binus.ac.id/index.php/commit/article/view/3704.