World Bank & Gertler, P. (2011). Impact evaluation in practice. World Bank.
芝加哥风格引文World Bank 与 Paul Gertler. Impact Evaluation in Practice. Washington, D.C.: World Bank, 2011.
MLA引文World Bank 与 Paul Gertler. Impact Evaluation in Practice. World Bank, 2011.
警告：这些引文格式不一定是100％准确.