Pengamatan Loyalitas Merek Obat Herbal Berdasarkan Kemasan dan Harga. Jurnal Simki Economic, [S. l.], v. 4, n. 2, p. 121–132, 2021. DOI: 10.29407/jse.v4i2.101. Disponível em: https://jurnal.unpkediri.ac.id/index.php/JSE/article/view/101. Acesso em: 27 feb. 2026.