* 陈贤庆(Chen Xianqing), 民国军阀派系谈 (The Republic of China warlord cliques discussed), 2007 revised edition* Schemmel, B.
* 陈贤庆(Chen Xianqing), 民国军阀派系谈 (The Republic of China warlord cliques discussed), 2007 revised edition* Schemmel, B.