Efektivitas Diskon Terhadap Penjualan Pada Praktik Kecantikan dr. Zie Tembilahan. Accounting, Management, and Business Economic Review (AMBER), [S. l.], v. 1, n. 1, p. 1–8, 2026. Disponível em: https://ejournal.unisi.ac.id/index.php/amber/article/view/5274. Acesso em: 7 jun. 2026.