NFL Referee Ron Torbert Makes the Tough Calls
For NFL officials, it's a side job that requires a lot of work
NFL's First All-Black Crew Officiated 'Monday Night Football' Game : NPR
NFL Week 2: Referee Adrian Hill assigned to Chiefs vs. Jaguars game - A to Z Sports
Quiz: How well do you know NFL referees?
How much do NFL referees get paid?
Twitter buzzes over 'hot ref,' Clete Blakeman, during Super Bowl 50 – New York Daily News
How to Become an NFL Official
Bill Leavy, long time NFL referee dead at 76
Browns vs. Bengals Referees: How Does Clete Blakeman Impact Week 1's Game?
Lo van Pham honored to be first Asian American NFL official – The Denver Post
NFL ref Clete Blakeman makes bungled penalty announcement, laughs off word salad
False claims of NFL referee investigation started as satire, Ap
Referee And Rocket Scientist? Adrian Hill Talks About The Pressure On And Off The Field - CBS Baltimore