Khunthong, Ubonwan, Nareerat Ananchairachata, and Boontham Racharak. 2020. “Factors Affecting the Acceptation of Financial Technology: Smartphone Payment System With Near Field Communication Technology to Buy Consumer Products in Bangkok”. Rajapark Journal 14 (32). Bangkok, Thailand:23-36. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/187526.