資治通鑒
http://www.360doc.com/content/13/0409/20/313676_277223145.shtml

http://yuedu.163.com/source/69c5bafd-a612-483e-99ee-f52a4196394e_4

http://www.sbkk8.cn/mingzhu/gudaicn/zizhitongjian/

http://www.fanw8.com/guwen/zizhi/
貞觀政要
http://www.360doc.com/content/13/0408/12/313676_276880077.shtml
http://www.360doc.com/content/13/0408/12/313676_276881632.shtml
http://www.sbkk8.cn/mingzhu/gudaicn/zhenguanzhengyao/
http://www.fanw8.com/guwen/zhenguan/
http://ewenyan.com/contents/more/zgzy.html