APA (7th ed.) Citation

Seldon, A., Ballinger, C., Collings, D., & Snowdon, P. (2005). Blair. London: Simon & Schuster.

Chicago Style (17th ed.) Citation

Seldon, Anthony, Chris Ballinger, Daniel Collings, and Peter Snowdon. Blair. London: Simon & Schuster, 2005.

MLA (8th ed.) Citation

Seldon, Anthony, et al. Blair. London: Simon & Schuster, 2005.