1. The Headhunters, John A. Byrne, Macmillan Publishing Company, New York, 1986.

2. Deciding Who Leads, Joseph Daniel McCool, Davies-Black Publishing, 2008.

3. Successful Onboarding, Mark A. Stain and Lilith Chrisitansen, McGraw Hill, 2010.

4. The Executive Search Process, Shireen DuPreez, http://www.executive-search-process.com