Syaifuddin, Syaifuddin. “Tantangan Membangun Kesetiaan Pelanggan Di Era Digital: Menggali Peran Kualitas Layanan Dalam Membentuk Loyalitas Pelanggan Ahass Ultra Jaya”. Innovative: Journal Of Social Science Research 4, no. 2 (March 25, 2024): 3724–3734. Accessed July 15, 2026. https://j-innovative.org/index.php/Innovative/article/view/9825.