Read Tony La Russa's letter on stepping down as White Sox manager – NBC Sports Chicago
Tony La Russa will not return as manager of Chicago White Sox this season, team says - ESPN
Tony La Russa - Wikipedia
White Sox Manager Tony La Russa Steps Down Due to Health Reasons – NBC Los Angeles
Tony La Russa, White Sox manager, steps down over heart issue
Tony La Russa to Leave White Sox Indefinitely Due to Medical Issue - Sports Illustrated
White Sox manager Tony La Russa reportedly retiring Monday due to medical situation
The Chicago White Sox should not bring back Tony La Russa as manager next season
Tony La Russa steps down as White Sox manager over health issues