El-Jafari, Mahmoud, et al. “CONSUMER BEHAVIOR TOWARDS INTRODUCING 3G MOBILE IN PALESTINE: THE CASE OF BETHLEHEM GOVERNORATE”. International Review of Management and Marketing, vol. 10, no. 2, Mar. 2020, pp. 68-79, https://econjournals.org.tr/index.php/irmm/article/view/9119.