Ravallion, M. (1998). Poverty lines in theory and practice. World Bank.
芝加哥风格引文Ravallion, Martin. Poverty Lines in Theory and Practice. Washington, DC: World Bank, 1998.
MLA引文Ravallion, Martin. Poverty Lines in Theory and Practice. World Bank, 1998.
警告：这些引文格式不一定是100％准确.