Githinji, M. K., and E. N. Nyamboga. “Challenges in the Production of Innovation Content for Engineering Artisans: Case Study of Media Producers in Nairobi, Kenya”. The International Journal of Humanities & Social Studies, vol. 4, no. 10, Oct. 2016, http://www.internationaljournalcorner.com/index.php/theijhss/article/view/126930.