Ng, Y. (1979). Welfare economics: Introduction and development of basic concepts. London: MacMillan.
शिकागो स्टाइल उद्धरणNg, Yew-Kwang. Welfare Economics: Introduction and Development of Basic Concepts. London: MacMillan, 1979.
एमएलए उद्धरणNg, Yew-Kwang. Welfare Economics: Introduction and Development of Basic Concepts. London: MacMillan, 1979.
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