Collier, P., & Sambanis, N. (2005). Understanding Civil War: Volume 1: Preface. World Bank.
Cita Chicago (17th ed.)Collier, P., i N. Sambanis. Understanding Civil War: Volume 1: Preface. World Bank, 2005.
Cita MLA (9th ed.)Collier, P., i N. Sambanis. Understanding Civil War: Volume 1: Preface. World Bank, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.