Amin, Hindu Jibril, and Ahmed L. Ala. “The Role of Advertisement and Sales Promotion in Student”. International Journal of Sciences: Basic and Applied Research (IJSBAR) 15, no. 1 (May 8, 2014): 450–463. Accessed July 23, 2024. https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/1968.