R. Onaolapo , A., and A. E. . Adeyinka. “Effect of Technological Innovation on Personnel Skill of Selected Manufacturing Firms in Nigeria”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 53, no. 2, Aug. 2020, pp. 17-29, https://gssrr.org/index.php/JournalOfBasicAndApplied/article/view/11345.