Ongesa, Cosmas Masega. “The Critical Thinking Skill Gap in the Kenyan Education Curriculum: The 21st Century Skills for the Global Citizen”. Journal of Interdisciplinary Studies in Education 9, no. SI (July 16, 2020): 178–191. Accessed February 25, 2021. https://www.ojed.org/index.php/jise/article/view/1860.