Kuta, J. I. J., O. O. Yusuf, and E. Raymond. “Assessment of Task, Activities and Working Materials Used in Non-Formal Training of Solar and Satellite System Installation in Niger State”. Journal of Sustainability and Environmental Management, vol. 1, no. 2, May 2022, pp. 247-56, doi:10.3126/josem.v1i2.45376.