Ekapop Changkaew และผู้แต่งคนอื่นๆ. (2024) Marketing Communication Strategy for Enhance Chiangrai Tourism. <i>Ph.D. in Social Sciences Journal</i>, <i>14</i>(1), 265-280.Ekapop Changkaew และผู้แต่งคนอื่นๆ. "Marketing Communication Strategy for Enhance Chiangrai Tourism". Ph.D. in Social Sciences Journal 14 (2024):265-280.Ekapop Changkaew และผู้แต่งคนอื่นๆ. Marketing Communication Strategy for Enhance Chiangrai Tourism. Doctor of Philosophy in Social Sciences Association Ramkhamhaeng University:ม.ป.ท. 2024.