Sen, A. (1980). Level of poverty: Policy and change - a background study for world development report 1980. World Bank publication.
シカゴスタイル引用形Sen, Amartya. Level of Poverty: Policy and Change - a Background Study for World Development Report 1980. USA: World Bank publication, 1980.
MLA引用形式Sen, Amartya. Level of Poverty: Policy and Change - a Background Study for World Development Report 1980. World Bank publication, 1980.
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