APA (7th ed.) Citation

Koch. (2004). Living the 80/20 way: Work less, worry less, succeed more, enjoy more. Nicholas Brealey Publishing.

Chicago Style (17th ed.) Citation

Koch. Living the 80/20 Way: Work Less, Worry Less, Succeed More, Enjoy More. London: Nicholas Brealey Publishing, 2004.

MLA (9th ed.) Citation

Koch. Living the 80/20 Way: Work Less, Worry Less, Succeed More, Enjoy More. Nicholas Brealey Publishing, 2004.

Warning: These citations may not always be 100% accurate.