Saputri, A., B. Waskito, Y. Y. Dharmawan, Haninun, and A. Nilwan. “STRATEGIES FOR EXPANDING THE POPULARIZATION OF TESTED PROFICIENT SPEAKERS OF INDONESIAN AT THE LAMPUNG PROVINCIAL LANGUAGE OFFICE”. Journal of Management, Business and Social Sciences, vol. 1, no. 1, Jan. 2023, pp. 26-38, https://journal.ubl.ac.id/index.php/mabuss/article/view/16.