Capulong, C. M. ., J. M. E. . Pujanes, . J. J. G. . Abellana, M. L. A. . Bation, G. L. . Dingding, and M. R. Y. . Teves. “Associations Between Teaching Challenges, Professional Self-Esteem, and Instructional Knowledge Among Out-of-Field Teachers: The Mediating Role of Coping Mechanisms”. International Journal of Learning, Teaching and Educational Research, vol. 25, no. 2, Feb. 2026, pp. 495-19, http://www.ijlter.net/index.php/ijlter/article/view/2717.