Novi Indriyani Sitepu, Yasir Nasution, and Safaruddin Siregar. “Strategi Marketing Syariah Berbasis Kualitas Spiritual Dalam Perspektif Agen Asuransi Syariah”. Conference on Economic and Business Innovation (CEBI) 1, no. 1 (March 20, 2021): 594–605. Accessed April 25, 2025. https://jurnal.widyagama.ac.id/index.php/cebi/article/view/138.