Surin P, Techa P. The Backchannel Functions in Conversations among Korean Learners of Thai as a Foreign Language. parichartj [internet]. 2024 May 27 [cited 2026 Sep. 29];37(2):398-415. available from: https://so05.tci-thaijo.org/index.php/parichartjournal/article/view/270841