1. The stratification of smoke;Botha,2014
2. Indoor air pollution in developing countries: A major environmental and public health challenge;Bruce;Bulletin of the World Health Organization,2000
3. Improving indoor air quality in Rural Kenya;CDC,2013
4. World economic and social survey 2013: Sustainable development challenges;Department of Economic and Social Affairs of the United States Secretariat (DESA),2019
5. Exploring cultures: Homesteads and huts of various Kenyan ethnic groups;Dowsing,2016