Olumide, A., E. S. Imoh, and O. T. Idowu. “Appraisal of Perceived Psychological Concepts As Determinants of Teachers Productivity Among Private Secondary School Teachers in Akinyele Local Governmen, Ibadan, Nigeria”. The International Journal of Humanities & Social Studies, vol. 8, no. 7, July 2020, doi:10.24940/theijhss/2020/v8/i7/HS2006-081.