《汉书·传·隽疏于薛平彭传》
汉宣帝地节三年，册立皇太子，选任丙吉为太傅，疏广为少傅。几个月后，丙吉升为御史大夫，疏广升为太傅。
地节三年，立皇太子，选丙吉为太傅，广为少傅，数月，吉迁御史大夫，广徙为太傅。
In the third year of Emperor Xuan's Diji era, the crown prince was formally recognized, and Ping Ji was selected to be the grand tutor, and Shu Guang as the junior tutor. A few months later, Ping Ji rose to be the grand censor, while Shu Guang rose to be the grand tutor.