《旧唐书·本纪·卷七》
五月一日，左屯卫大将军兼检校洛州长史张仁为朔方道大总管，以防备突厥。
五月戊戌，左屯卫大将军兼检校洛州长史张仁亶为朔方道大总管，以备突厥。
On May 1st, Zhang Ren, the Grand General of Leftist Camp and concurrently Prefectural Inspector, was appointed as the Chief Commander of the Shuofang Path to guard against Turks.