“Strategi Reliationship Marketing Selama Krisis Guna Mengembangkan Produk Dan Jasa Berdasarkan Kebutuhan Pelanggan”. JCSE: Journal of Community Service and Empowerment 3, no. 1 (July 12, 2022): 56–60. Accessed January 2, 2025. http://jurnal.universitasputrabangsa.ac.id/index.php/jcse/article/view/83.