Siegel, P., & Alwang, J. R. (2004). Export commodity production and broad-based rural development: Coffee and cocoa in the Dominican Republic. World Bank.
芝加哥风格引文Siegel, Paul, 与 Jeffrey R. Alwang. Export Commodity Production and Broad-based Rural Development: Coffee and Cocoa in the Dominican Republic. [Washington, D.C: World Bank, 2004.
MLA引文Siegel, Paul, 与 Jeffrey R. Alwang. Export Commodity Production and Broad-based Rural Development: Coffee and Cocoa in the Dominican Republic. World Bank, 2004.
警告：这些引文格式不一定是100％准确.