Kaka comments on Ronaldo's Real Madrid departure: 'He needed a new challenge' - Football
Cristiano Ronaldo and Kaká both score as Real Madrid overcome Villarreal, Cristiano Ronaldo
File:Real Madrid vs Real Sociedad feb 2011 - Kaká pasa a Cristiano Ronaldo.jpg - Wikimedia Commons
Kaka Slams Real Madrid Fans over Cristiano Ronaldo, Comments on Star's Future, News, Scores, Highlights, Stats, and Rumors
Kaka: Ronaldo should have more respect from Real Madrid fans - NBC Sports
Así gana el Madrid: the tactical identity of the greatest club in the world, by Clarissa Barcala
Ronaldo has now scored 200 goals in 197 appearances for Real Madrid : r /soccer
Everything you thought you knew about Ronaldo is wrong, The Independent
Former Real Madrid president reveals Cristiano Ronaldo had to pay a €30 million penalty if he did not join Los Blancos in 2009
Kaka wants Real Madrid fans to show more gratitude to Cristiano Ronaldo - Eurosport
Madrid icon Casillas calls for 'vintage Clasico when nightmare ends' but which Real and Barca stars would make it? – The US Sun
Cristiano Ronaldo turns 30 today. In 6 seasons as a Real Madrid player, his record is 289 goals in 277 matches. : r/soccer
Bad Transfers: Kaka to Real Madrid, 2009
Kaka will stay at Real Madrid says Perez