Saputri, A., Waskito, B., Dharmawan, Y. Y., Haninun, & Nilwan, A. (2023). STRATEGIES FOR EXPANDING THE POPULARIZATION OF TESTED PROFICIENT SPEAKERS OF INDONESIAN AT THE LAMPUNG PROVINCIAL LANGUAGE OFFICE. Journal of Management, Business and Social Sciences, 1(1), 26–38. Retrieved from https://journal.ubl.ac.id/index.php/mabuss/article/view/16