APA (7th ed.) Citation

Koch, R. (2007). The 80/20 principle: The secret of achieving more with less (Rev. and updated ed.). Nicholas Brealey Publishing,.

Chicago Style (17th ed.) Citation

Koch, Richard. The 80/20 Principle: The Secret of Achieving More with Less. Rev. and updated ed. London: Nicholas Brealey Publishing,, 2007.

MLA (9th ed.) Citation

Koch, Richard. The 80/20 Principle: The Secret of Achieving More with Less. Rev. and updated ed. Nicholas Brealey Publishing,, 2007.