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Bassett, Lucinda. (2001). Life Without Limits. Cliff Street Books.
Covey, Stephan R. (2000). Principle Centered Leadership. Simon & Schuster.
Covey, Stephan R. (2008). The Speed of Trust: The One Thing That Changes Everything [Audio CD]. Simon & Schuster Audio.
Goldsmith, Marshall. (2007). What Got You Here Won’t Get You There: How Successful People Become Even More Successful [Audio CD]. Random House Audio.
Maxwell, John C. (1998). The 21 Irrefutable Laws of Leadership: Follow Them and People Will Follow. Thomas Nelson.
Montoya, Peter; Vandehev, Tim. (2005). The Brand Called You: The Ultimate Personal Branding Handbook to Transform Anyone into an Indispensible Brand. Peter Montoya Publishing.
Patterson, Kerry; Grenny, Joseph; McMillan, Ron; Switzler, Al. (2002). Crucial Conversations: Tools for Talking When Stakes Are High. McGraw-Hill.