1. Lyrics. Available at: http://lyrics.songfacts.com/detail.php?id=26552111. Accessed July 30, 2013.
2. Deciding to lead;Lexa;J Am Coll Radiol,2008
3. The 7 habits of highly successful people;Covey,1989
4. Succession leadership;Lexa;J Am Coll Radiol,2011