APA (7th ed.) Citation

Institution of Civil Engineers (Great Britain), Kershaw, S., & Hutchison, D. (2009). Client best practice guide. Thomas Telford.

Chicago Style (17th ed.) Citation

Institution of Civil Engineers (Great Britain), Sue Kershaw, and David Hutchison. Client Best Practice Guide. London: Thomas Telford, 2009.

MLA (9th ed.) Citation

Institution of Civil Engineers (Great Britain), et al. Client Best Practice Guide. Thomas Telford, 2009.