SARI, Refina Armelda; ALI, Hapzi. Pengaruh Strategi Promosi, Loyalitas Pelanggan dan Diferensiasi Produk terhadap Keberlanjutan Bisnis. Jurnal Greenation Sosial dan Politik, [S. l.], v. 2, n. 4, p. 178–185, 2025. DOI: 10.38035/jgsp.v2i4.236. Disponível em: https://greenationpublisher.org/JGSP/article/view/236. Acesso em: 25 apr. 2025.