MARDIANTO, E.; ZAMHARI; TRI SETYO MULYANI, H. . ANALISIS PENGARUH PELAYANAN, PROMOSI DAN VARIASI PRODUK TERHADAP PENINGKATAN VOLUME PENJUALAN USAHA THAI TEA BOOYAH DI SUNGAILIAT. JURNAL PROGRESIF MANAJEMEN BISNIS, [S. l.], v. 6, n. 2, p. 346–355, 2019. Disponível em: https://e-jurnal.stie-ibek.ac.id/index.php/JIPMB/article/view/149. Acesso em: 3 jul. 2024.