Sari R, Wahyuningsih N. UTILIZING BUSINESS GAME FOR IMPROVING STUDENTS’ SPEAKING PROFICIENCY IN ECONOMICS FACULTY. EJ [Internet]. 2019 Jul. 1 [cited 2024 Dec. 22];6(1):148-59. Available from: http://jurnalpendidikan.unisla.ac.id/index.php/elink/article/view/123