Yulia Agustin, Yayan Sudrajat, Bambang Sumadyo,Elyza Martiarini, Heppy Atmapratiwi,Nurhayati,. 2020. “LANGUAGE, BUSINESS, AND CHARACTER BUILDING”. International Journal of Advanced Science and Technology 29 (4s), 1678 -83. http://sersc.org/journals/index.php/IJAST/article/view/6972.