Painter & Ashe 2012: "in the USA and the UK… sceptical voices generally appear in much higher numbers… in France, the UK and the USA… right-leaning newspapers are much more likely to include uncontested sceptical voices."
Truy cập ngày 12 tháng 1 năm 2009.  ^ Painter & Ashe 2012: "in the USA and the UK… sceptical voices generally appear in much higher numbers… in France, the UK and the USA… right-leaning newspapers are much more likely to include uncontested sceptical voices." ^ Saad, Lydia (21 tháng 3 năm 2007).