《旧唐书·本纪·卷十一》
十六日，泽潞节度使李抱玉兼任凤翔陇右节度使，兼任南道通和吐蕃、凤翔、秦、陇、临洮以东观察使、处置使，仍旧命令四镇行营节度使马瞞为副通和吐蕃使。
戊申，泽潞李抱玉兼凤翔陇右节度使，兼南道通和吐蕃、凤翔 秦陇，临洮已东 ，观察处置等使。仍命四镇行营节度使马璘为副和吐蕃使。
On the 16th, Ze-Lu Jiedushi Li Bao Yu held the concurrent post of Fengxiang Long Right Jiedushi, the concurrent post of Southern Route Ambassador to Tubo, Fengxiang, Qin, Long, Lintao by the East Guancha Envoy, and the Ordering Envoy; Ma Man, the Four Towns Xingying Jiedushi, was still ordered to be the Assistant Ambassador to Tubo.