1. The art of writing a scientific article;Van der Geer;J Sci Commun,2000
2. The elements of style;Strunk,1979
3. Mettam GR, Adams LB. How to prepare an electronic version of your article. In: Jones BS, Smith RZ, editors. Introduction to the electronic age. New York: E-Publishing Inc; 1999. p. 281-304.
4. International Energy Agency, 2013, “Energy Poverty”, www.iea.org/topics/energypoverty, accessed 7 August, 2015.
5. A. Pueyo, F. Gonzalez, C. Dent and S. DeMartino, 2013, “The evidence of benefits for poor people of increased renewable electricity capacity: Literature review”, Evidence report, Institute of Development Studies.