Cristiano Ronaldo and why shirt sales don't even come close to paying for a transfer, The Independent
The Ronaldo effect: what big players mean for the business goals of clubs like Manchester United
Lucky number 7: Cristiano Ronaldo's career in figures, UK News
Messi v Ronaldo: The Real Winners From Their Record Shirt Sales - SoccerBible
The myth of Cristiano Ronaldo shirt sales and how much they actually make Manchester United - Manchester Evening News
Cristiano Ronaldo: New Manchester United No 7 smashes shirt sale record and causes media frenzy, Football News
Premier League: Cristiano Ronaldo's No. 7 jersey sales break all records
Cristiano Ronaldo's Man United Shirt Sales Have Reached £187 Million
Cristiano Ronaldo's 'No. 7' jersey breaks sales record - Nairametrics
Did Lionel Messi Really Crush Cristiano Ronaldo's Shirt Sales Record?
Where to buy top new Cristiano Ronaldo Al Nassr Jersey 2023
5 players with the most shirt sales in 2021
Man Utd sold £187m of Cristiano Ronaldo shirts in 10 days of him rejoining them - Daily Star