Nweke, Emmanuel Onyekachi, and Rosemary Godfrey Umanah. “ROLE DIFFERENTIATION AND JOB PERFORMANCE OF ADMINISTRATIVE STAFF IN TERTIARY INSTITUTIONS IN RIVERS STATE”. African Journal of Management and Business Research 3, no. 1 (March 31, 2022): 59–72. Accessed October 27, 2026. https://publications.afropolitanjournals.com/index.php/ajmbr/article/view/53.