"The Critical Path and Other Writings on Critical Theory, 1963-1975 (Design as a Principle in the Arts)". Book edited by Jean O'Grady and Eva Kushner, March 14, 2009.
Henry Mintzberg (2009). “Managers Not Mbas: A Hard Look at the Soft Practice of Managing and Management Development: Easyread Large Bold Edition”, p.43, ReadHowYouWant.com