SAHDILA, Rizki; RAMADHANI, Sri; IMSAR. Serving with Integrity: Service Ethics, Pricing Innovation, and Digital Marketing as Expressions of Islamic Economic Principles in Simalungun Regency. Jurnal Ilmiah Mahasiswa Raushan Fikr, [S. l.], v. 14, n. 2, p. 413–424, 2025. DOI: 10.24090/jimrf.v14i2.15004. Disponível em: https://ejournal.uinsaizu.ac.id/index.php/raushanfikr/article/view/15004. Acesso em: 4 jun. 2026.