1. DOMO: Data Never Sleeps 6.0 (2019). https://www.domo.com/assets/downloads/18_domo_data-never-sleeps-6+verticals.pdf
2. OECD: Giving Knowledge for Free: The Emergence of Open Education Resources, Centre for Educational Research and Innovation, Organization for Economic Cooperation and Development (2007)
3. Cheung, K.S., Lam, J., Im, T., Szeto, R.: Exploring a pedagogy-driven approach to e-course development. In: Proceedings of the IEEE International Workshop on Education Technology and Training, pp. 22–25. IEEE (2008)
4. Lam, J., Cheung, K.S., Yau, J., Seto, W., Im, T.: Students’ needs of e-courses as complement to traditional learning: a japanese studies e-course case. In: Proceedings of the International Symposium on IT in Medicine and Education, pp. 876–880. IEEE (2008)
5. Cheung, K.S., Lam, J. Im, T., Szeto, R.: Some principles for good practices of e-learning in continuing education institutions. In: Proceedings of the International Conference on Education Technology and Computer, pp. 69–72 (2009)