เตชะสวัสดิ์ อ. Omni channel Retailing for Consumers in Marketing 4.0 Era. rmutphuso [Internet]. 2018 Jul. 13 [cited 2024 May 12];2(2):82-96. Available from: https://so05.tci-thaijo.org/index.php/rmutphuso/article/view/134207