《资治通鉴·唐纪·唐纪六十九》
辛未，朝廷任命门下侍郎、同平章事郑从谠以同平章事衔，充任河东节度使。
辛未，以门侍郎、同平章事郑从谠同平章事，充河东节度使。
On Xinwei, the imperial court appointed Zheng Congke, Minister of the Household and Minister of Rites, with the same status as Minister and acting official of Hedong Jiedushi.