《资治通鉴·晋纪·晋纪三十九》
当初，北燕将领库宫斌投降了北魏，不久又背叛北魏重新归附北燕。
初，燕将库傉官斌降魏，既而复叛归燕。
At that time, the Northern Yan general Kuguo Bin surrendered to the Northern Wei, but he soon betrayed the Northern Wei and returned to Northern Yan.