Kittel leads Argos-Shimano at Tour de France. Cycling News (Future Publishing Limited), 19 June 2012. Dostupné online [cit. 2012-07-05].
DECALUWÉ, Brecht. Kittel quits Tour de France on stage five. Cycling News (Future Publishing Limited), 5 July 2012. Dostupné online [cit. 2012-07-05].
Kittel makes winning return at Eneco Tour. Cycling News (Future Publishing Limited), 7 August 2012. Dostupné online [cit. 2012-08-07].
Kittel "sick" of Armstrong supporters. CyclingNews (Future Publishing Limited), 26 October 2012. Dostupné online [cit. 2013-02-13].
velonation.com
ATKINS, Ben. Kittel sprints to stage four as Boonen sneaks into the lead. VeloNation (VeloNation LLC), 9 August 2012. Dostupné online [cit. 2012-08-09].