[1]
R. Atena, “Flexibility and Adaptability of Secondary School Managers to 21st Century Skills”, IJSBAR, vol. 40, no. 2, pp. 169–185, Aug. 2018, Accessed: May 15, 2026. [Online]. Available: https://gssrr.org/JournalOfBasicAndApplied/article/view/9123