คำล้าน ว. and เอกะกุล ธ. 2021. A Development of Difficulty Word Reading and Writing Skill by using the Process of Cooperative Leaning for Prathom Suksa 3 Students of Banpoekrasang School of Sisaket Primary Educational Service Area Office 4. Ubon Ratchathani Journal of Research and Evaluation. 2, 2 (Aug. 2021), 54–61.