NORIKUN, B. The importance of islamic business ethics in increasing consumer loyalty to cooking oil product. Indonesian Journal of Islamic Economics Research, [S. l.], v. 7, n. 2, p. 102–119, 2025. DOI: 10.18326/ijier.v7i2.5506. Disponível em: https://ejournal.uinsalatiga.ac.id/index.php/ijier/article/view/5506. Acesso em: 14 jun. 2026.