Fatmala, Indra, and Hendra Setiawan. “ANALISIS WILLINGNESS TO PAY PREMIUM APPLE PRODUCT USERS IN INDONESIA”. Jesya 5, no. 1 (January 3, 2022): 632-641. Accessed June 15, 2026. https://stiealwashliyahsibolga.ac.id/jurnal/index.php/jesya/article/view/562.