Valdés, A. (2000). Agricultural support policies in transition economies. World Bank.
芝加哥风格引文Valdés, Alberto. Agricultural Support Policies in Transition Economies. Washington, D.C.: World Bank, 2000.
MLA引文Valdés, Alberto. Agricultural Support Policies in Transition Economies. World Bank, 2000.
警告：这些引文格式不一定是100％准确.