Buddy Ryan certainly did it his way – Sun Sentinel
Former NFL coach, defensive guru Buddy Ryan dies at age 85 - ESPN
Ron Rivera's untold stories of the 1985 Chicago Bears - ESPN
Jan. 26, 1986: Buddy Ryan loves his annihilators – Hartford Courant
Buddy Ryan: How Bears coach invented the 46 defense - Sports Illustrated
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Mike Ditka coaching tree includes Ron Rivera, other former Bears - Sports Illustrated
Buddy Ryan Hated Opposing Quarterbacks but Fought for His Players - The Ringer
What made Buddy Ryan appealing was that he wasn't for every player
Buddy Ryan, mastermind behind 1985 Bears defense, dies at 82 – Orange County Register