Cardwell, D. S. L. (1972). Turning points in Western technology: A study of technology, science and history. New York: Science History Publications.
शिकागो स्टाइल उद्धरणCardwell, D. S. L. Turning Points in Western Technology: A Study of Technology, Science and History. New York: Science History Publications, 1972.
एमएलए उद्धरणCardwell, D. S. L. Turning Points in Western Technology: A Study of Technology, Science and History. New York: Science History Publications, 1972.
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