Jason Giambi announces retirement, thanks family and baseball friends – New York Daily News
Ex-Athletics star Jason Giambi announces retirement
Selig Gives Giambi a Pass On Steroids Admission
Jason Giambi retires: A look back at his Athletics career - Athletics Nation
January 8 – Happy Birthday Jason Giambi
Old-Timers Games, once a hit all over baseball, have almost disappeared
The Cleanup Man
Jason Giambi retiring after 20-year career with A's, Yankees, Rockies and Indians – New York Daily News
Revisiting Jason Giambi's 2005 comeback season - Beyond the Box Score
New York Yankees: 5 greatest first basemen in franchise history
What do Yankees fans think about Carl Yastrzemski? - Quora
As Yanks hear boos, Rangers are on top
Jason Giambi – Society for American Baseball Research
Jason Giambi collects first hit with Yankees
Steroid' removed from Giambi's contract