Sitthitikul P. The Roles of Output in Second Language Acquisition: A Case Study of Thai Learners. Hum. Behav. Dev. Soc. [internet]. 2019 Mar. 28 [cited 2026 Sep. 23];15(1):63-76. available from: https://so01.tci-thaijo.org/index.php/hbds/article/view/180603