Nilai-Nilai Kualitas Layanan dalam Al-Qur’an dan Hadits. International Conference on Islamic Studies, [S. l.], v. 3, n. 2, p. 419–433, 2022. Disponível em: https://ejournal.iaforis.or.id/index.php/icois/article/view/158. Acesso em: 19 apr. 2026.