Suetonius, The Lives of Twelve Caesars, Life of Tiberius 21. For the debate over whether Agrippa's imperium after 13 BC was maius or aequum, see, e.g., E. Badian (1980–1981). “Notes on the Laudatio of Agrippa”. Classical Journal. 76 (2): 97–109, các trang 105–106.