Ndubi, Edgar, 2009. Factors Influencing Hotel Room Supply and Demand in Kenya: A Simultaneous Equations Model, KIPPRA Discussion Paper No. 97. Nairobi. KIPPRA.
Duim, V.R. van der; Marwijk, R.B.M. van; Ndubi, E.; Fetene, G., 2006. Ozi's Bed and Breakfast: A Case of Translation. Matkailututkimus = Finnish Journal of Tourism Research 2 (1). - pp. 41 – 56.