APA (7th ed.) Citation

Barber, P. (2006). Subtracting and taking away. Great Britain.

Chicago Style (17th ed.) Citation

Barber, Patti. Subtracting and Taking Away. United Kingdom: Great Britain, 2006.

MLA (9th ed.) Citation

Barber, Patti. Subtracting and Taking Away. Great Britain, 2006.