Muhammad, Aisyah, and Sungplee Sungplee. “Factors of Customer”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 24, no. 7 (December 24, 2015): 252–265. Accessed July 3, 2024. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/4929.