Lockwood, M. (2007). labyrinth of time: Introducing the universe. Oxford University Press.
शिकागो स्टाइल उद्धरणLockwood, Michael. Labyrinth of Time: Introducing the Universe. Oxford: Oxford University Press, 2007.
एमएलए उद्धरणLockwood, Michael. Labyrinth of Time: Introducing the Universe. Oxford University Press, 2007.
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