2015 in review: Major sporting retirements
Rockies' Giambi fired up to return to Yankee Stadium – The Denver Post
Who is the best Oakland A's player not in the Hall of Fame? Moneyball Years - Athletics Nation
Jason Giambi retires: Farewell to the Giambino
Jason Giambi retires: Farewell to the Giambino
Revisiting Jason Giambi's 2005 comeback season - Beyond the Box Score
September 30, 2000: Athletics inch closer to playoffs in 23-2 rout of Rangers – Society for American Baseball Research
Former A's outfielder Jeremy Giambi dies at 47
Jason Giambi retires after 20 MLB seasons - Mangin Photography Archive
Former MLB Player Jason Giambi Takes A Swing At Virtual Reality
Remembering the best of times with Jason Giambi - Athletics Nation
Zwelling: Giambi and Helton make grand exits
Jason Giambi retiring after 20 years in Major League Baseball