《新五代史·本纪·唐本纪第六》
五月一日，任命太子宾客郑珏和工部尚书任圜为中书侍郎，同中书门下平章事。
五月丙辰朔，太子宾客郑珏、工部尚书任圜为中书侍郎：同中书门下平章事。
On May 1st, appointed Zheng Jue, a Guest to the Crown Prince, and Ren Yuan, Minister of Works, as Ministers of the Imperial Secretariat and Directors of the Executive Bureau.