NON IKA SEMBIRING. CERAMAH TENTANG CARA MENGEMBANGKAN KEMAMPUAN PUBLIC SPEAKING. Jurnal Abdimas Mutiara, [S. l.], v. 1, n. 1, p. 418–422, 2020. Disponível em: https://e-journal.sari-mutiara.ac.id/index.php/JAM/article/view/4384. Acesso em: 30 jan. 2026.