APA (7th ed.) Citation

Collier, P., Hoeffler, A., & Soderbom, M. (2014). On the Duration of Civil War. World Bank, Washington, DC.

Chicago Style (17th ed.) Citation

Collier, Paul, Anke Hoeffler, and Mans Soderbom. On the Duration of Civil War. World Bank, Washington, DC, 2014.

MLA (8th ed.) Citation

Collier, Paul, et al. On the Duration of Civil War. World Bank, Washington, DC, 2014.