Manyanza, R., Wawire, N., & Onono,P. (2021). Effects of Political Risk Factors on Tax Revenue in Kenya. Journal of Economic and Financial Research. Vol (5)1
Manyanza, R. (2012). Determinants of Foreign Direct Investment in Kenya. Unpublished Masters Project. Kenyatta University
Manyanza, R. (2020). Analysis of Tax Revenue Productivity in the East African Community. Unpublished Doctoral Dissertation), Kenyatta University, Nairobi, Kenya.