Kittiwootthidumrongchai, Pimnipa, and Krisada Phornprapa. 2020. “FACTORS RELATED TO THE BEHAVIOR OF USING VENDING MACHINE BOONTERM : CASE STUDY OF NAKHON PATHOM PROVINCE”. Rajamangala University of Technology Tawan-Ok Social Science Journal 9 (2):77-85. https://so05.tci-thaijo.org/index.php/SocialJournal2rmutto/article/view/248528.