《资治通鉴·唐纪·唐纪三十一》
其中安西节度使镇抚西域，统辖龟兹、焉耆、于阗、疏勒四镇，治所在龟兹城，共有兵二万四千人。
安西节度抚宁西域，统龟兹、焉耆、于阗、疏勒四镇，治龟兹城，兵二万四千。
Among them, the Anxi Jiedushi appeased the Western Regions, controlling the four towns of Qiuci, Yanqi, Yutian and Shule, governed by Qiuci City with a total of 24,000 soldiers.