《新唐书·本纪·卷五·睿宗 玄宗》
初八，洛州长史宋瞡任检校吏部尚书、同中书门下三品。
丁巳，洛州长史宋璟检校吏部尚书、同中书门下三品。
On the 8th, prefect of Luozhou Song Zan was appointed ex officio minister of the ministry of Official Personnel with the third rank of the Secretariat and the Three Departments.