1. Ahmad, Syahrul Ahmar & Yoke, Soo & Yunos, Rahimah & Mohd Amin, Juyati. (2019). Exploring Lecturers’ Readiness for 21st Century Education in Malaysian Higher Learning Institutions. 1. 15-29. 10.33422/EJTE.2019.10.27.
2. Applied Educational Systems, I. (2019). What Are 21st Century Skills?. [online] Aeseducation.com. Available at: https://www.aeseducation.com/career-readiness/what-are-21st-century-skills [Accessed 10 Nov. 2019].
3. Chai, C. S., & Kong, S.-C. (2017). Professional learning for 21st century education. Journal of Computers in Education, 4(1), 1–4.
4. Hixson,N.K., Ravitz, J., & Whisman, A.(2012). Extended professional development in project-based learning: Impacts on 21st century teaching and student achievement.Charleston, WV: West Virginia Department of Education, Division of Teaching and Learn-ing, Office of Research.
5. Hussin, A. A. (2018). Education 4.0 made simple: Ideas for teaching. International Journal of Education and Literacy Studies, 6(3), 92.
6. Partnership for 21st Century Learning. (2007). Framework for 21st Century Learning. Retrieved from http://www.p21.org/our-work/p21-framework
7. Partnership for 21st Century Skills. (2011). No Title. Retrieved from http://www.p21.org
8. Shear, L., Novais, G., Means, B., Gallagher, L., & Langworthy, M. (2010). ITL Research Design. Menlo Park, CA: SRI International.
9. Silva, E. (2009). Measuring skills for 21st-century learning. Phi Delta Kappan, 90(9), 630–634.
10. The William and Flora Hewlett Foundation. (2010). Education Program Strategic Plan.
11. Education. Menlo Park, CA: SRI International.
12. Yoke, S. K ( 2018, April 06). Are educators ready for Education 4.0. The Star Online. Retrieved from https://www.thestar.com.my/opinion/letters/2018/04/06/are-educators-ready-for-education-40
13. Yoke, S. K. (2018, April 28). Shaping education for future employment. The New Straits Times.