Susan Changorok, Philemon Yugi, Winnie Waiyaki and Alice Munene. Risk Factors Associated with Oppositional Defiant Disorder among Children in Selected Primary Schools in Nairobi County, Kenya. Elixir International Journal 122 (2018) 51872-51881
Susan Changorok, Philemon Yugi, Winnie Waiyaki and Alice Munene. The Efficacy of Cognitive Behavior Therapy on Oppositional Defiant Disorder among Children in selected Primary Schools in Nairobii County, Kenya. International Journal of Current Research Vol. 10, Issue, 10, pp.74026-74038, October, 2018.
Susan Changorok, Philemon Yugi, Winnie Waiyaki and Alice Munene. The Prevalence of Oppositional Defiant Disorder among Children in Selected primary schools in Nairobi County, Kenya
Maina RM, Some ES, P. Yugi and Kariuki JG. Knowledge on helmet use by motorcycle riders and passengers in rural Rabai sub county in Kilifi County- Kenya. International Journal of Current Science and Technology. Vol.4, Issue, 10, pp. 278-280, October, 2016
Monica Matetai, Philemon Yugi. Assessment on the Use of Monitoring and Evaluation System in Constituency Development Fund, Nairobi County. Journal of Public Policy and Administration, Vol 1, No 1 (2016) – IPRJB
Andrew Tomkins, Jean Duff, Atallah Fitzgibbon, Azza Karam, Edward J Mills, Keith Munnings, Sally Smith, Shreelata Rao Seshadri, Avraham Steinberg, Robert Vitillo, Philemon Yugi. (2015). Controversies in Faith and Health Care. The Lancet, Vol. 386, No. 10005