Could A's changing times signal end to Billy Beane era?
Life and Career of Baseball GM Billy Beane
Billy Beane steps aside after 33-year run with Oakland A's
If Billy Beane Is Done With Baseball, He's Left An Indelible Mark
Billy Beane might step away from baseball and Oakland A's - Athletics Nation
Potential Billy Beane departure would mark end of an era
A's Await Film, but Without the Ending They Wanted - The New York Times
Billy Beane is finally rebuilding the Oakland A's, and it had better work - Athletics Nation
What is Billy Beane's ownership stake in the Oakland A's? What happens to his stake if he leaves or is fired? - Quora
Billy Beane discusses Athletics' future