《宋史·本纪·卷十六》
元丰七年正月初六，封洛州防御使世准为安定郡王。
七年春正月丙午，封洺州防御使世准为安定郡王。
On the 6th day of the first month of the seventh year of Yuanfeng, Shi Zhun, the defense envoy of Luozhou, was enfeoffed as the Prince of Dingjun.