Ketchan, Unchalee, Surin Makka, Vipa Chompooborisut, Vit Vajararodomprasert, and Chalerm Jaitim. 2022. “A Study of Behavior of Using Food Delivery Application System: A Case Study of Grab Food”. Rajapark Journal 16 (46). Bangkok, Thailand:420-31. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/256110.