Ng,Yew-Kwag. (1979). Welfare economics: Introduction and development of basic concepts. Mac Millan.
Čikaški stil citiranjaNg,Yew-Kwag. Welfare Economics: Introduction and Development of Basic Concepts. London: Mac Millan, 1979.
MLA način citiranjaNg,Yew-Kwag. Welfare Economics: Introduction and Development of Basic Concepts. Mac Millan, 1979.
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