Former Yankees pitcher and 'Ball Four' author Jim Bouton dies at age 80 - Pinstripe Alley
Ball Four at 50 and the Legacy of Jim Bouton – Society for American Baseball Research
Yankees pitcher Jim Bouton dies aged 80 - Daily Star
Ball Four: Twentieth Anniversary Edition by Jim Bouton
Yankees pitcher and 'Ball Four' author Jim Bouton dies at 80 – New York Daily News
Jim Bouton, 'Ball Four' author and former Yankees pitcher, dies at 80
Yankees pitcher and 'Ball Four' author Jim Bouton dies at 80 – New York Daily News
Bouton, ex-Yankee and 'Ball Four' author, dies - ESPN
Jeff Mills: Pitcher-turned-author Jim Bouton never forgot Greensboro
Remembering Jim Bouton, Yankees Pitcher and Tell-All Author of Ball Four
Jim Bouton dies 2019 at 80 - Obituary