B. M. Bakar, D. T. Mandila, and D. G. Koda , Trans., “Role of Continuous Professional Development for English Language Teachers in Enhancing Teaching  Public Ordinary Secondary Schools”., int.jour.sci.res.mana, vol. 13, no. 08, pp. 4227–4242, Aug. 2025, doi: 10.18535/ijsrm/v13i08.el03.