Winarti, Yuni, Sumitro Sarkum, and Abd. Halim. “Product Innovation on Customer Satisfaction and Brand Loyalty of Smartphone Users”. Agregat: Jurnal Ekonomi dan Bisnis 5, no. 2 (February 17, 2022): 214–227. Accessed November 5, 2024. https://journal.uhamka.ac.id/index.php/agregat/article/view/7234.