A., Akpan, G.,  Usoro, H. S., and Enoidem Usoro. 2010. “Theoretical Bases for Supervisory Practices in Vocational Education: In Usoro, E. B. And Usoro, H. S. (eds). Readings in Vocational Administration and Supervision”. Afrischolar Discovery Repository (Annex), June, 212 – 231. https://doi.org/10.60951/afrischolar-214.