“The Role of Teachers’ Professional Competence on the Learning Achievement of Group a Students at TK Al Jamiatul Amaliyah Gerumpung”. Journal of Education, Teaching, and Learning 1, no. 1 (March 20, 2024): 22–36. Accessed October 30, 2025. http://www.journal.formadenglishfoundation.org/index.php/edutecle/article/view/10.