Jason Giambi retiring after 20-year career with A's, Yankees, Rockies and Indians – New York Daily News
Manny Ramirez retires rather than face drug suspension – Orange County Register
Jason Giambi retiring after 20 years in Major League Baseball
Former Rockies slugger Jason Giambi retires - Purple Row
Jason Giambi, former Rockies 1B, announces retirement – The Denver Post
Jason Giambi retiring after 20-year career with A's, Yankees, Rockies and Indians – New York Daily News
Giambi brothers, Jim Bastion earn spot on South Hills Wall of Fame – San Gabriel Valley Tribune
Giambi homers, Jimenez shines as Colorado wins 5-1 - The San Diego Union-Tribune
MLB News: Former Oakland A's star Jeremy Giambi passes away at age 47
Jason Giambi retires after 20 MLB seasons - Mangin Photography Archive
Catching up with MVP Jason Giambi
Rockies' Jason Giambi finds tranquil path on baseball's rocky road – The Denver Post
Jason Giambi retires: A look back at his Athletics career - Athletics Nation