Kurniawan, Ryan, Fajri Ridho Hustianto, and Zulfikar. 2022. “ THE EFFECT OF PRODUCT MIX ON CUSTOMERS’ LOYALTY (A Study at PT. Bank BTN Sukabumi City)”.
CENTRAL ASIA AND THE CAUCASUS
23 (1): 3372-78.
https://ca-c.org/index.php/cac/article/view/306
.