“Uchanganuzi wa Ishara za Kisemiotiki zinazotumiwa katika Matangazo ya Biashara ya Kampuni ya Safaricom”, mwanga, vol. 5, no. 2, pp. 225–237, Sep. 2020, Accessed: Aug. 25, 2025. [Online]. Available: https://journals.mu.ac.ke/index.php/mwl/article/view/194