NFL referees fight back against accusations of biased officiating
NFL referees association fires back at 'baseless' claims that officials are biased
NFL's Week 6 officiating was embarrassing
The NFL's officiating crisis - Why it's time to sound the alarm - ESPN
Hurley's Picks: The NFL will never fix officiating because it just doesn't have to do it - CBS Boston
Belgian referee accused of bias was a case of mistaken identity, Soccer
NFL referees under fire after controversial weekend, capped by Giants-Commanders debacle
NFL referees fight back against accusations of biased officiating
Deranged parents made me quit my job as a youth sports ref
Recent Data Analysis Offers Compelling Case to Suggest Officiating Bias (or Worse) by the NFL Against the Raiders – Raiders Beat
Tom Brady and the terrible call: conspiracy or simple incompetence?, Tom Brady