《资治通鉴·唐纪·唐纪二》
程知节带领内马军同李密一起扎营在北邙山上，单雄信带领外马军驻扎在偃师城北。
程知节将内马军与密同营在北邙山上，单雄信将外马军营于偃师城北。
Cheng Zhijie led the inner cavalry to camp together with Li Mi on Peimang Mountain, and Shan Xiongxin led the outer cavalry to camp at the northern outskirts of Yanshi City.