Colquhoun, W. (1971). Biological Rhythms and Human Performance. Academic Press.
शिकागो स्टाइल उद्धरणColquhoun, W.P. Biological Rhythms and Human Performance. London: Academic Press, 1971.
एमएलए उद्धरणColquhoun, W.P. Biological Rhythms and Human Performance. Academic Press, 1971.
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