"15 Nobel Peace Prize Laureates Call on World Leaders to Urge Chinese President Hu Jintao to Release Nobel Peace Prize Laurate Liu Xiaobo and his wife Liu Xia".
Truy cập ngày 17 tháng 1 năm 2011.  ^ “15 Nobel Peace Prize Laureates Call on World Leaders to Urge Chinese President Hu Jintao to Release Nobel Peace Prize Laurate Liu Xiaobo and his wife Liu Xia”.