《资治通鉴·晋纪·晋纪二十三》
东晋任命西中郎将袁真为都督司、冀、并三州诸军事，任命北中郎将庾希为都督青州诸军事。
以西中郎将袁真都督司、冀、并三州诸军事，北中郎将庾希都督青州诸军事。
The Eastern Jin Dynasty appointed Yuan Zhen, the general of the West China, as the governor of Si, Ji, and Bingzhou, and Yu Xi, the general of the North China, as the governor of Qingzhou.