《资治通鉴·宋纪·宋纪三》
于是，拓跋焘改命崔浩与中书侍郎邓颖等人继续编撰，称《国书》，共三十卷。
世祖更命崔浩与中书侍郎邓颖等续成之，为《国书》三十卷。
So, Tuoba Tao ordered Cui Hao and Zhongshu Shilang Deng Ying and others to continue writing, called "National Book", with a total of thirty volumes.