APA (7th ed.) Citation

Barber, P. (2006). Doubling and multiplying. Great Britain.

Chicago Style (17th ed.) Citation

Barber, Patti. Doubling and Multiplying. United Kingdom: Great Britain, 2006.

MLA (9th ed.) Citation

Barber, Patti. Doubling and Multiplying. Great Britain, 2006.

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