N. Panyabhu, N. Assapaporn, and S. Intasingh, “Developing Learner Development Activities to Promote the Cross-Cultural Understanding of Grade 4 - 6 Students at Bannonglom School, Phayao Province”, Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University, vol. 16, no. 1, pp. 242–256, Mar. 2022.