《新五代史·本纪·唐本纪第七》
二十一日，任西京留守王思同为西面行营都步署，靖难军节度使药彦稠为副。
辛卯，西京留守王思同为西面行营都部署，静难军节度使药彦稠为副。
On the 21st day, Wang Sitong, the garrison commander of Xijing, was appointed as the commander-in-chief of the western expeditionary force, and Yao Yianchou, the acting military governor of Jingzhou, was appointed as the deputy.