1. Hussin, A. A. (2018). Education 4.0 made simple: Ideas for teaching. International Journal of Education and Literacy Studies, 6(3), 92-98.
2. Kapur, R. 2018. Factors influencing the students academic performance in secondary schools in India. University Of Delhi.
3. Khargharia, A. (2020). The Importance of Co-Curricular Activities In Students. Psychology and Education Journal, 57(9), 4516-4518
4. Maskuriy, R., Selamat, A., Ali, K. N., Maresova, P., & Krejcar, O. (2019). Industry 4.0 for the construction industry—How ready is the industry?. Applied Sciences, 9(14), 2819.
5. Ng, K. (2020). Adapted physical activity through COVID-19. European Journal of Adapted Physical Activity, 13(1), 1.
6. Pazilah, F. N. P., Hashim, H., & Yunus, M. M. (2019). Using technology in ESL classroom: highlights and challenges. Creative Education, 10(12), 3205.
7. Rono, R. 2013. Factors Affecting Pupils' Performance in Public Primary Schools at Kenya Certificate of Primary Education Examination (Kcpe) in Emgwen Division, Nandi District, KENYA (Doctoral dissertation, University of Nairobi).
8. Rundle, A. G., Park, Y., Herbstman, J. B., Kinsey, E. W., & Wang, Y. C. (2020). COVID-19 related school closings and risk of weight gain among children. Obesity (Silver Spring, Md.), 28(6), 1008.
9. Sami, A., & Irfan, A. 2020. Academic Achievement of college students based on Co-curricular Activities. Journal of Management Info, 7(1), 16-23.
10. Siddiky, M. R. (2019). Developing co-curricular activities and extra-curricular activities for all-round development of the undergraduate students: A study of a selected public university in Bangladesh. Pakistan Journal of Applied Social Sciences, 10(1), 61-82.