Chantaranamchoo NC, Laophuangsak P. Development of Tourism Products for Elderly Group by Local Operators in the Western Region for Enhanced Quality Tourism. soc sci hum utcc [internet]. 2019 Feb. 13 [cited 2026 Aug. 30];37(1):52-64. available from: https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/173747