《资治通鉴·隋纪·隋纪二》
文帝因为杨俊骄奢纵欲，丁亥，下令罢免了他的官职，以王爵回家闲居。
上以为奢纵，丁亥，免俊官，以王就第。
Emperor Wen was very angry about Yang Jun's arrogance and extravagance, so he ordered to dismiss his official positions in the day Ding Hai and let him retire at home as a prince. 