Marcus , Anyasor, Okwuchukwu. “ Effect of SMS Advertising on Attitudes of Nigeria GSM Phone Users ”. African Journal of Education,Science and Technology (AJEST) 3, no. 1 (January 9, 2016): Pg 215–224. Accessed April 16, 2026. https://ajest.org/index.php/ajest/article/view/595.