Baker, George H and Richard G. Little. "Enhancing Homeland Security: Development of a Course on Critical Infrastructure Systems" Journal of Homeland Security and Emergency Management, 3.4 (2006): -. Retrieved 18 May. 2013, from doi:10.2202/1547-7355.1263

Baker, G. & Little, R. (2006). Enhancing Homeland Security: Development of a Course on Critical Infrastructure Systems. Journal of Homeland Security and Emergency Management, 3(4), pp. -. Retrieved 18 May. 2013, from doi:10.2202/1547-7355.1263

Baker, George H and Richard G. Little. 2006. Enhancing Homeland Security: Development of a Course on Critical Infrastructure Systems. Journal of Homeland Security and Emergency Management. 3(4): -. Retrieved 18 May. 2013, from doi:10.2202/1547-7355.1263