Kǎi / sǎ / dà / dì / de / 《 / Gāo / lú / zhàn / jì / 》 / shì / yán / jiū / nà / duàn / lì / shǐ / de / zhòng / yào / shǐ / liào / 。凯撒大帝的《高卢战记》是研究那段历史的重要史料。Julius Caesar's *Commentaries on the Gallic War* is an important historical source for studying that period.