《旧唐书·列传·卷五十六》
天宝初，太真得宠，剑南节度使章仇兼琼推荐国忠为宾佐，不久又升为监察御史。
天宝初，太真有宠，剑南节度使章仇兼琼引国忠为宾佐，既而擢授监察御史。
At the beginning of the Tianbao reign, Taizhen gained favour and Zhangqiu Jianqiong, the commanding military commissioner in Jiannan, recommended Guozhong as assistant guard, who was soon promoted to be supervising imperial inspector.