Triassanti, Risa, and Ahmad Baihaqi. “ The Use of Circle Games As A Strategy to Improve The Student’s Mastery in English Vocabulary”. The Proceedings of International Conference: Ronggolawe English Teaching Conference (RETCO), vol. 7, no. 1, Dec. 2022, pp. 48-56, http://prosiding.unirow.ac.id/index.php/retco/article/view/1721.