APA (7th ed.) Citation

Kaplan, R. S., & Kaplan, E. (2000). The nothing that is : a natural history of zero / Robert Kaplan ; illustrations by Ellen Kaplan: A natural history of zero. Penguin.

Chicago Style (17th ed.) Citation

Kaplan, Robert S., and Ellen Kaplan. The Nothing That Is : A Natural History of Zero / Robert Kaplan ; Illustrations by Ellen Kaplan: A Natural History of Zero. London: Penguin, 2000.

MLA (9th ed.) Citation

Kaplan, Robert S., and Ellen Kaplan. The Nothing That Is : A Natural History of Zero / Robert Kaplan ; Illustrations by Ellen Kaplan: A Natural History of Zero. Penguin, 2000.

Warning: These citations may not always be 100% accurate.