Saenkla, P., and W. Jantarattana. “Development of Learning Achievement About on the Farm Unit to Develop Reading and Learning Behavior Skills by Using Phonics Teaching Methods. English for Grade 2 Students, Wat Muang Ngam School, Phetchaburi”. Doctor of Philosophy in Social Sciences Journal, vol. 2, no. 2, Aug. 2023, pp. ุ60-72, https://so08.tci-thaijo.org/index.php/dpssj/article/view/2017.