Mwangi, Antony Chuma, and Yona Sakaja Mangusho. 2017. “Influence of Innovation Services on Customer Satisfaction, a Case of Kenya Power and Lighting Company Limited, Elgeyo Marakwet County”. American Scientific Research Journal for Engineering, Technology, and Sciences 37 (1): 273-86. https://www.asrjetsjournal.org/American_Scientific_Journal/article/view/3538.