A. Wannasu, P. Sribunrueang, and A. Kraibut, “The Development of a Thai Language Learning Activity Package on Words and Their Functions Based on the Four Iddhipāda Principles for Mathayom Suksa 3 Students at Photak Phitthayakhom School, Nong Khai Province”, JBER, vol. 12, no. S1, pp. 196–205, Jun. 2026.