References
- Barrett, David, ed. 2001. World Christian Encyclopedia. 2nd ed. Oxford: Oxford University Press.
- Gill, Anthony. 2004. The Political Origins of Religious Liberty. Cambridge: Cambridge University Press.
- Institute for Economics & Peace. 2015. Global Terrorism Index 2015: Measuring and Understanding the Impact of Terrorism. New York: Institute for Economics and Peace.
- Hansen, Stig Jale. 2015. Al Shabaab: The History and Ideology of a Militant Islamist Group. New York: Oxford University Press.
- Martin, Ines San. 2015. “Christians in Nigeria Debate Taking Up Arms Against Boko Haram.” Crux, August 26. Accessed May 2, 2016. http://www.cruxnow.com/faith/2015/08/26/christians-in-nigeria-debate-taking-up-arms-against-boko-haram/.
- Odua, Chika. 2015. “A Holy Burden: Nigerian Religious Groups Aid Boko Haram Victims.” Aljazeera America, February 26. http://america.aljazeera.com/articles/2015/2/26/carrying-a-holy-burden-in-nigeria.html.
- Offiong, Vanessa. 2015. “Angels Step into Government’s Shoes for North East IDPs.” Daily Trust, May 3, http://www.dailytrust.com.ng/sunday/index.php/feature/20545-angels-step-into-govt-s-shoes-for-north-east-idps.
- Sarkissian, Ani. 2015. Varieties of Religious Repression: Why Governments Restrict Religion. New York: Oxford University Press.