Kurniawan, Ryan, Fajri Ridho Hustianto, and Zulfikar. “ THE EFFECT OF PRODUCT MIX ON CUSTOMERS’ LOYALTY (A Study at PT. Bank BTN Sukabumi City)”. CENTRAL ASIA AND THE CAUCASUS 23, no. 1 (January 30, 2022): 3372–3378. Accessed December 23, 2024. https://ca-c.org/CAC/index.php/cac/article/view/306.