Nemomsa, K., and E. Mijena. “School Based CPD and Its Impacts on Teachers’ Practices and Students’ Learning in Some Selected Secondary Schools of East Wollega Zone”. Journal of Science, Technology and Arts Research, vol. 5, no. 2, June 2016, pp. 44-56, https://journals.wgu.edu.et/index.php/star/article/view/326.