Deismireacht APA

Kaplan, R. (1999). The nothing that is: A natural history of zero. London: The Penguin Press.

Trích dẫn kiểu Chicago

Kaplan, Robert. The Nothing That Is: A Natural History of Zero. London: The Penguin Press, 1999.

Deismireacht MLA

Kaplan, Robert. The Nothing That Is: A Natural History of Zero. London: The Penguin Press, 1999.

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