How much do football referees get paid in the Premier League, La Liga & Serie A?
The NFL Fiasco: Why Referees Are Like Chicago Teachers - Bloomberg
NFL Adds to League Officiating Department; Alberto Riveron Remains Top Replay Official - Steelers Now
Lo van Pham honored to be first Asian American NFL official – The Denver Post
Official (gridiron football) - Wikipedia
How much does a World Cup referee get paid? - Quora
Why does the NFL have inactive players on game day? - Hogs Haven
More NCAA leagues to pay women's basketball referees equally
FHSAA faces flap over pay for game officials – Orlando Sentinel
Officiating crews for the 2021 season – Football Zebras
NBA referees' salaries: how much do NBA referees take home?
High schools: FHSAA approves raises to maximum per-game referee fees; negotiations ongoing between officials and district
NCAA hoops leagues grapple with unequal pay for women's referees
What do referees and linesmen earn per match in the EPL? - Quora