กำลังแพทย์ วรินทร์ทิพย์. “Online Marketing to Generation X Y Z consumers”. RMUTP Research Journal Humanities and Social Sciences 1, no. 2 (July 17, 2018): 1–17. accessed September 11, 2026. https://so05.tci-thaijo.org/index.php/rmutphuso/article/view/134880.