Hutton, G. (1980). Whatever happened to productivity: Tenth Wincott memorial lecture delivered at the Royal Society of Arts on Wednesday, 31 October 1979. London: Institute of Economic Affairs for the Wincott Foundation.
शिकागो स्टाइल उद्धरणHutton, Graham. Whatever Happened to Productivity: Tenth Wincott Memorial Lecture Delivered At the Royal Society of Arts On Wednesday, 31 October 1979. London: Institute of Economic Affairs for the Wincott Foundation, 1980.
एमएलए उद्धरणHutton, Graham. Whatever Happened to Productivity: Tenth Wincott Memorial Lecture Delivered At the Royal Society of Arts On Wednesday, 31 October 1979. London: Institute of Economic Affairs for the Wincott Foundation, 1980.
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