Kamiliah, Dewi Ratih, and Chandra Wijaya. “Policy Issues and Challenges in the Introduction of Electronic Toll Collection in Indonesia: A Qualitative System Dynamics Approach”. Migration Letters 20, no. 8 (November 6, 2023): 784–798. Accessed July 3, 2024. https://migrationletters.com/index.php/ml/article/view/5543.