Nadia Sari Putri, By Tri Agung Nusantara Kr. J. Tompong. Classroom Action Research as a Means of Improving Teacher Professionalism and Learning Quality in the Digital Age. j.Guru [Internet]. 2025 Aug. 21 [cited 2025 Sep. 4];1(1):39-47. Available from: http://gpijournal.com/index.php/guru/article/view/211