Dupuis, Jacques-Armand (9 March 2015). "Kevin Estre et Laurens Vanthoor avec Oak Racing" [Kevin Estre and Laurens Vanthoor with Oak Racing]. AUTOhebdo.fr (in French). Grouppe Hommel. Archived from the original on 11 March 2015. Retrieved 9 March 2015.
Dupuis, Jacques-Armand (9 March 2015). "Kevin Estre et Laurens Vanthoor avec Oak Racing" [Kevin Estre and Laurens Vanthoor with Oak Racing]. AUTOhebdo.fr (in French). Grouppe Hommel. Archived from the original on 11 March 2015. Retrieved 9 March 2015.