APA (7th ed.) Citation

Paulos, J. A. (1998). Once upon a number: The hidden mathematical logic of stories. Basic Books.

Chicago Style (17th ed.) Citation

Paulos, John Allen. Once upon a Number: The Hidden Mathematical Logic of Stories. New York, NY: Basic Books, 1998.

MLA (9th ed.) Citation

Paulos, John Allen. Once upon a Number: The Hidden Mathematical Logic of Stories. Basic Books, 1998.