Alasdair White, From Comfort Zone to Performance Management : Understanding Development and Performance, White & MacLean Publishing, , 20 p. (ISBN978-2-930583-01-3, lire en ligne)
(en) Judith M. Bardwick, Danger in the Comfort Zone : From Boardroom to Mailroom--how to Break the Entitlement Habit That's Killing American Business, AMACOM Div American Mgmt Assn, , 255 p. (ISBN978-0-8144-7886-8, lire en ligne)
nytimes.com
(en) Alina Tugend, « Tiptoeing Out of One’s Comfort Zone (and of Course, Back In) », The New York Times, (lire en ligne, consulté le )