Umar, R.
(2018).
 In-Service Training Needs of Colleges of Education Business Teachers for job Performance and Sustainable Development in North-West Geo-Political Zone, Nigeria..
<em>NIU Journal Of Humanities, 2</em>(2 (B)), 235-241.
Consultado de <a href="https://www.niujournals.ac.ug/ojs/index.php/niuhums/article/view/176" target="_new">https://www.niujournals.ac.ug/ojs/index.php/niuhums/article/view/176</a>