Saputri A, Waskito B, Dharmawan YY, Haninun, Nilwan A. STRATEGIES FOR EXPANDING THE POPULARIZATION OF TESTED PROFICIENT SPEAKERS OF INDONESIAN AT THE LAMPUNG PROVINCIAL LANGUAGE OFFICE. Management, Business and Social Sciences [Internet]. 2023 Jan. 1 [cited 2024 May 18];1(1):26-38. Available from: https://journal.ubl.ac.id/index.php/mabuss/article/view/16