Sappaile BI, Gonzales S, Villanueva A. THE EFFECTIVENESS OF BLENDED LEARNING IN IMPROVING 21ST CENTURY SKILLS IN MIDDLE SCHOOL STUDENTS. J. Neosantara Hybrid Learning [Internet]. 2026Apr.29 [cited 2026Jul.26];4(2):163-75. Available from: https://research.adra.ac.id/index.php/jnhl/article/view/2695