C. C. Lopez and L. L. . Ravana, “Challenges and Motivation Influencing Work Engagement of High School Teachers in Zone 1, Schools Division of Zambales”, Int. J. Multidiscip. Appl. Bus. Edu. Res., vol. 6, no. 7, pp. 3598–3611, Jul. 2025, doi: 10.11594/ijmaber.06.07.28.