《隋书·列传·卷四十八》
曲嘉，字灵凤，是金城榆中人。曲嘉被立做高昌王后，又对蠕蠕称臣。
嘉字灵凤，金城榆中人，既立，又臣于茹茹。
Qu Jia, style name Lingfeng, was a native of Jincheng Yuzhong. After Qu Jia was established as King of Gaohchang, he proclaimed himself a subject of the Ruru again.