Ibrahim, Ace, and R. Supyan Sauri. “Quality Management of Portfolio-Based English Learning in Junior High Schools”. Edu Cendikia: Jurnal Ilmiah Kependidikan 6, no. 02 (August 20, 2026): 2297–2309. Accessed September 3, 2026. https://itscience-indexing.com/jurnal/index.php/educendikia/article/view/8732.