Song Jiaoren | Chinese politician. Encyclopedia Britannica [online]. [cit. 2021-06-23]. Dostupné online. (anglicky)
daydaynews.cc
DAYDAYNEWS. What happened to the murderers who killed Song Jiaoren more than 100 years ago?. daydaynews.cc [online]. 2020-03-27 [cit. 2021-06-23]. Dostupné online. (anglicky)