Bulu, A.G.D. , Turnip, A.N., Gresy Turnip, Hotnola Simanungkalit dan Selviana Napitupulu 2026. Artikel Improving Students Reading Skill of Eight Grade at SMP Negeri 9 Pematangsiantar Using Cooperative Based Learning Approach. Almufi Journal of Measurement, Assessment, and Evaluation Education. 4, 2 (Agu 2026), 1–14.