Khan Khayru, R., Wisnujati, R. N. S. ., Darmawan, D. ., & Issalillah, F. . (2021). Pengamatan Loyalitas Merek Obat Herbal Berdasarkan Kemasan dan Harga. Jurnal Simki Economic, 4(2), 121-132. https://doi.org/10.29407/jse.v4i2.101