Manalu, Febriana Valentin, and Nora Pitri Nainggolan. “Pengaruh Kualitas Produk, Daya Tarik Dan Promosi Terhadap Loyalitas Pelanggan Harapan Jaya Dapur 12 Batam”. eCo-Buss 6, no. 2 (December 10, 2023): 509–520. Accessed July 3, 2024. https://jurnal.kdi.or.id/index.php/eb/article/view/672.