Collier, P., & Hoeffler, A. (2005). Democracy and Resource Rents. GPRG.
Cita Chicago (17th ed.)Collier, P., i A. Hoeffler. Democracy and Resource Rents. GPRG, 2005.
Cita MLA (9th ed.)Collier, P., i A. Hoeffler. Democracy and Resource Rents. GPRG, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.