NFL's Top QBs after Week 10: PFF, QBR, Passer Rating Formula - Vikings Territory
PFF College Football Quarterback Superlatives: The nation's leaders in four key metrics, NFL Draft
Top 10 NFL CBs by lowest passer rating when targeted, NFL News, Rankings and Statistics
What is best stat to judge QB effectiveness? : r/nfl
Next Gen Stats: Intro to Passing Score metric
NFL Week 2 Analytical Quarterback Rankings: Tua Tagovailoa's electric Week 1 performance vaults him to the top of the ranking, NFL News, Rankings and Statistics
Ranking The 32 Starting NFL Quarterbacks Entering 2020, Part 3, by Rajan Nanavati, SportsRaid
The 5 O'Clock Club: The difference between passer rating and quarterback rating - Hogs Haven
How is a QB's passer rating calculated? - Quora
The statistical case for Tom Brady as 2016 NFL MVP
Patrick Mahomes – No Guts No Glory