Tutah Tonye (Ph.D), Chukundah,. “MARKETING INFORMATION SYSTEM AND MARKETING PERFORMANCE OF FOOD AND BEVERAGE FIRMS IN PORT HARCOURT”. BW Academic Journal (December 20, 2023): 19. Accessed April 19, 2026. https://mail.bwjournal.org/index.php/bsjournal/article/view/1657.