Areerat, Peera. “ Phra Nakhon Si Ayutthaya Province during the COVID-19 Outbreak”. Journal of Preventive Medicine Association of Thailand 11, no. 2 (September 7, 2021): 239–254. accessed September 18, 2026. https://he01.tci-thaijo.org/index.php/JPMAT/article/view/250548.