- Chapter 1 in Elisabeth J. Wood, Insurgent Collective Action and Civil War in El Salvador (Cambridge University Press, 2003).
- Elaine K. Denny and Barbara F. Walter, “Ethnicity and Civil War,” Journal of Peace Research 51, no. 2 (2014): 199–212.
- Chapter 3 in Patrick Cockburn, The Age of Jihad: Islamic State and the Great War for the Middle East (Verso Books, 2016).