Group R (English Wikipedia)

Elizalde, Pablo (13 August 2012). "Toyota unveils entry-level WRC Yaris". Autosport.com. Haymarket Publications. Retrieved 23 August 2012. Toyota said the car will be able to compete in the World Rally Championship under the R1A regulations once it is homologated by the FIA before the end of the year.

diariomotor.com

"SUZUKI MOTOR IBERICA ENTERS ERC2 WITH SWIFT R4LLY S". 20 January 2021. Archived from the original on 8 November 2021. Retrieved 8 November 2021.

"R4 rally cars and Rally2 Kit". Archived from the original on 2021-11-08. Retrieved 2021-11-08.

"81e Rallye Monte Carlo 2013 Entry List" (PDF). rallye-magazin.de. Monte Carlo Rally. 20 December 2012. Retrieved 21 December 2012.

Holmes, Martin (19 December 2011), The Return of the Rallying Sports Car, archived from the original on 26 April 2012, retrieved 23 August 2012

Holmes, Martin (19 December 2011), The Return of the Rallying Sports Car, archived from the original on 26 April 2012, retrieved 23 August 2012
"Exciting changes for 2013 WRC". wrc.com. WRC Promoter GmbH. 21 Sep 2012. Archived from the original on 1 October 2012. Retrieved 1 Oct 2012.
"Junior WRC is where it's at, says top rally man". wrc.com. WRC Promoter GmbH. 6 December 2012. Archived from the original on 13 April 2014. Retrieved 20 January 2013.
Carlos Argüelles-Meres Cueto. "El Renault Clio R3T progresa adecuadamente". Archived from the original on 2013-11-29.
"R4 rally cars and Rally2 Kit". Archived from the original on 2021-11-08. Retrieved 2021-11-08.
"SUZUKI MOTOR IBERICA ENTERS ERC2 WITH SWIFT R4LLY S". 20 January 2021. Archived from the original on 8 November 2021. Retrieved 8 November 2021.
"French talent Cartier heads to ERC in a Toyota Yaris- whatever next?". Archived from the original on December 2, 2021.

Paur, Jason (23 December 2011). "Lotus Shakes Down Its Rally-Spec Exige". Autopia. Wired. Retrieved 23 August 2012.

"WRC welcomes FIA R-GT Cup". wrc.com. WRC Promoter GmbH. 29 September 2014. Retrieved 2 October 2014.
"Exciting changes for 2013 WRC". wrc.com. WRC Promoter GmbH. 21 Sep 2012. Archived from the original on 1 October 2012. Retrieved 1 Oct 2012.
"Junior WRC is where it's at, says top rally man". wrc.com. WRC Promoter GmbH. 6 December 2012. Archived from the original on 13 April 2014. Retrieved 20 January 2013.
"R5 Corsa breaks cover".