APA (7th ed.) Citation

Vorderman, C. (1996). How math works. Reader's Digest Association.

Chicago Style (17th ed.) Citation

Vorderman, Carol. How Math Works. Pleasantville, N.Y.: Reader's Digest Association, 1996.

MLA (9th ed.) Citation

Vorderman, Carol. How Math Works. Reader's Digest Association, 1996.