YENNY NATHALIA. SEKOLAH TINGGI MODE MEDAN. Jurnal Sains dan Teknologi ISTP, [S. l.], v. 15, n. 2, p. 136–143, 2021. DOI: 10.59637/jsti.v15i2.88. Disponível em: https://ejurnal.istp.ac.id/index.php/jsti/article/view/88. Acesso em: 24 jul. 2025.