Collier, P., Hoeffler, A., & Söderbom, M. (2001). On the Duration of Civil War. World Bank.
Chicago-čujuhus (17. p.)Collier, P., A. Hoeffler, juo M. Söderbom. On the Duration of Civil War. World Bank, 2001.
MLA-čujuhus (9. p.)Collier, P., et al. On the Duration of Civil War. World Bank, 2001.
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