A great place to start to learn more about Kenyan running
Finn, Adharanand. Running with the Kenyans. 2012.
Fudge, Barry W. Elite Kenyan Endurance Running: Diet, Hydration, Lifestyle and Training Practices. NY: VDM Verlag, 2009.
Gikuyu, Kibai. Out of Kenya: Kenyan Running Secret. Boston: Ushrika Press, 1999.
Tanser, Toby. More Fire: How to Run the Kenyan Way. Yardley, PA: Westholme, 2008.
Wirz, Jung. Paul Tergat: Running to the Limit. NY: Meyer and Meyer Sport, 2005.
Wirz, Jung. Run to Win: The Training Secrets of the Kenyan Runners. NY: Meyer and Meyer Sport, 2006.