Records of the Three Kingdoms
The Records of the Three Kingdoms is a Chinese official history written by Chen Shou in the late 3rd century CE, covering the end of the Han dynasty (c. 184 – 220 CE) and the subsequent Three Kingdoms period (220–280 CE). It is regarded as to be the authoritative source text for these periods.
Source: Wikipedia — Records of the Three Kingdoms (CC BY-SA 4.0)