Ugwuonah, C. T. . “A Critical Review and Response to the Climate Change Denier Letter ‘There Is No Climate Emergency’”. International Journal of Sciences: Basic and Applied Research (IJSBAR), vol. 56, no. 2, Mar. 2021, pp. 92-105, https://www.gssrr.org/index.php/JournalOfBasicAndApplied/article/view/12228.