Nasrah, Fitri Yanty Muchtar, Fathiyah Nitaninnawa, and Muhammad Ilham S. “Learning Online: The Effect of Learning Digital Badges on Learning Outcome”. International Conference on Elementary Education 4, no. 1 (April 14, 2022): 505-514. Accessed September 22, 2025. https://proceedings2.upi.edu/index.php/icee/article/view/2024.