BEATRICE ETIM EKPENYONG, PROF. NSINI AKPAN, UTIBE-ABASI DAVID ETOK. MARKETING MIX AND SUSTAINABILITY OF MEDIUM SCALE ENTERPRISES IN AKWA IBOM STATE. UJBEE [Internet]. 2026 Aug. 29 [cited 2026 Sep. 3];3(2):1-9. Available from: https://ujbee.com/index.php/UJBEE/article/view/51