《旧唐书·本纪·卷九》
至此，追奉先帝玄宗旨意以创建陵园，于广德元年三月十八日葬在泰陵。
至是，追奉先旨以创寝园，以广德元年三月辛酉葬于泰陵。
Therefore, they followed the intention of the late Emperor Xuanzong and created a mausoleum, and buried him in Ta Mausoleum on March 18th, the first year of Guangde.