Willmore, T. (1985). Introduction to differential geometry. Clarendon Press.
शिकागो स्टाइल उद्धरणWillmore, T. Introduction to Differential Geometry. Oxford: Clarendon Press, 1985.
एमएलए उद्धरणWillmore, T. Introduction to Differential Geometry. Clarendon Press, 1985.
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