ใยยุง รังษี. “BUSINESS MODEL OF INTERNET OF THINGS IN BANGKOK METROPOLITAN SMART CITY”. Pathumthani University Academic Journal 12, no. 1 (June 25, 2020): 362–373. Accessed May 8, 2024. https://so05.tci-thaijo.org/index.php/ptujournal/article/view/241146.