APA (7th ed.) Citation

Seldon, A., & Snowdon, P. (2015). Cameron at 10: The inside story 2010-2015. William Collins.

Chicago Style (17th ed.) Citation

Seldon, Anthony, and Peter Snowdon. Cameron at 10: The Inside Story 2010-2015. London: William Collins, 2015.

MLA (9th ed.) Citation

Seldon, Anthony, and Peter Snowdon. Cameron at 10: The Inside Story 2010-2015. William Collins, 2015.