<Li> ^ Jump up to: Aschburner, Steve (2008 - 04 - 07). "Inside the NBA: NBA, NCAA are both wrong in debate about age limit". SportsIllustrated.com . Retrieved 2008 - 11 - 14 . </Li> <Li> Jump up ^ "Stern wants NBA age limit raised to 20". ESPN.com. 2005 - 04 - 13 . Retrieved 2008 - 11 - 14 . </Li> <Li> Jump up ^ Zillgit, Jeff (December 7, 2011). "Hunter's memo to players details NBA CBA". USA Today . Retrieved December 12, 2011 . </Li> <Li> ^ Jump up to: "David Stern wants change to age rule". ESPN.com . Associated Press . April 12, 2012 . Archived from the original on April 4, 2012 . </Li>

When did the nba change the high school rule