ใจดี ณรงค์, Chot Bodeerat, and Phasakorn Dokchan. “BEHAVIOR OF WEARING HELMETS OF PEOPLE OF PEOPLE IN SAWZNKHALOK MUNICIPALITY, SAWANKHALOK DISTRICT, SUKHOTAI PROVINCE”. Journal of MCU Phetchaburi Review 8, no. 1 (April 29, 2025): หน้า 221 – 231. accessed October 9, 2026. https://so03.tci-thaijo.org/index.php/JPR/article/view/286715.