5 sources

•  http://www.history.army.mil/html/faq/oaths.html : The oaths taken by people willing to serve in the United States Army.

• http://www.todaysmilitary.com/military-benefits/military-compensation/results?campaign_id=SEM2012:on:google:Salary-2012_military_pay_chart:broad : Personal testimonies or being in the military, prices for housing and salaries. 

• http://www.therichest.org/sports/forbes-highest-paid-athletes/ : List of all the highest paid athletes and their sport. 

• http://phpagencyblog.com/2013/03/19/are-professional-athletes-paid-too-much/ : Are athletes paid too much article. 

• http://www.livestrong.com/article/386002-what-does-it-mean-to-be-an-athlete/ : What does it mean to be an athlete article.