Wongsuwan, Watchareeya, and Sugunya Ruangjaroon. 2020. “Task-Based Lesson Plan Development for Writing Opinion Essays in Thai”. Humanities and Social Sciences Nakhonsawan Rajabhat University Academic Journal 7 (1). Nakhon Sawan, Thailand:112-24. https://so05.tci-thaijo.org/index.php/hssnsru/article/view/242353.