Collier, P., Hoeffler, A., & Söderbom, M. (2001). On the Duration of Civil War. World Bank.
Lua i Stíl Chicago (17ú heag.)Collier, P., A. Hoeffler, agus M. Söderbom. On the Duration of Civil War. World Bank, 2001.
Lua MLA (9ú heag.)Collier, P., et al. On the Duration of Civil War. World Bank, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.