Saragih, Amran, Eko Siringo-ringo, Firinta Togatorop, and Stevanie Tanjaya. “Pengaruh Kualitas Produk, Kualitas Pelayanan Dan Harga Terhadap Kepuasan Dan Loyalitas Konsumen”. Jesya 3, no. 1 (January 30, 2020): 210-218. Accessed June 1, 2026. https://stiealwashliyahsibolga.ac.id/jurnal/index.php/jesya/article/view/170.