Techawongsathian A, Zhao P. THE STUDY OF CHINESE LANGUAGE SERVICE AND COMPREHENSION WITH CHINESE TOURIST AMONG THE STAFFS AND VENDORS IN TERMINAL 21 ASOK SHOPPING MALL. HCU Chinese Lang Cult [internet]. 2021 Jun. 29 [cited 2026 Oct. 3];8(1):167-86. available from: https://so02.tci-thaijo.org/index.php/clcjn/article/view/244793