《资治通鉴·唐纪·唐纪七十七》
保义节度使王珙攻打护国节度使王珂，王珂向李克用求援，王珙则向朱全忠求援。
保义节度使王珙攻护国节度使王珂，珂求援于李克用，珙求援于硃全忠。
Wang Gong, the Military Governor of Baoyi, attacked Wang Ke, the Military Governor of Huguo; Wang Ke asked Li Keyong for help; Wang Gong asked Zhu Quanzhong for support.