Collier, P., Hoeffler, A., & Rohner, D. (2009). Beyond greed and grievance: Feasibility and civil war.
Dyfyniad Arddull ChicagoCollier, P., A. Hoeffler, and D. Rohner. Beyond Greed and Grievance: Feasibility and Civil War. 2009.
Dyfyniad MLACollier, P., et al. Beyond Greed and Grievance: Feasibility and Civil War. 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.