Collier, P., & Hoeffler, A. (2005). Democracy and Resource Rents. GPRG.
芝加哥风格引文Collier, P., 与 A. Hoeffler. Democracy and Resource Rents. GPRG, 2005.
MLA引文Collier, P., 与 A. Hoeffler. Democracy and Resource Rents. GPRG, 2005.
警告：这些引文格式不一定是100％准确.
APA引文