LAHAGU, Titonik; MENDROFA, Yupiter; BATE’E, Maria Magdalena; WARUWU, Sukaaro. Analisis Strategi Pengembangan Usaha Dalam Meningkatkan Volume Penjualan di Grand Kartika Restaurant Kota Gunungsitoli. Innovative: Journal Of Social Science Research, [S. l.], v. 3, n. 4, p. 6159–6170, 2023. Disponível em: https://j-innovative.org/index.php/Innovative/article/view/4242. Acesso em: 8 sep. 2026.