Vo, Thanh Duy, and Natjiree Jaturapitakkul. 2016. “The Use of Vocabulary Learning Strategies by Thai EFL Learners Studying Vietnamese As a Third Language”. LEARN Journal: Language Education and Acquisition Research Network 9 (2):105-21. https://so04.tci-thaijo.org/index.php/LEARN/article/view/102650.