M. Nadube (Ph.D), Paul, and Toruyouyei Ebitimi Gowon. “CELEBRITY ENDORSEMENT AND SALES PERFORMANCE OF TELECOMMUNICATION FIRMS IN PORT-HARCOURT”. BW Academic Journal (March 12, 2023): 13. Accessed April 18, 2026. https://www.bwjournal.org/index.php/bsjournal/article/view/1154.