Octaviani, Risa, Ika Handayani, and Welliam Hamer. “Applying Board Race Game to Increase Students’ Vocabulary Mastery in Uttayan Suksa Krabi School, Thailand”. Journal of English Education Studies 2, no. 2 (November 1, 2019): 101-110. Accessed May 27, 2020. http://jees.ejournal.id/index.php/english/article/view/40.