Tacitus, Annals 1.5-6 https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Tacitus

Tacitus, Annals 1.5-6 https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Tacitus/Annals/1A*.html Links to an external site.
(or https://www-loebclassics-com.ezproxy.library.sydney.edu.au/view/tacitus-annals/1931/pb_LCL249.251.xml?result=2&rskey=5NNNox)
Cassius Dio, Roman History 56.30, 57.3  http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Cassius_Dio/home.html
Suetonius, Life of Tiberius 22 http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Suetonius/12Caesars/home.html
Velleius Paterculus, Roman History 2.104 and 2.112. http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Velleius_Paterculus/home.htmlLinks to an external site.
(or https://www-loebclassics-com.ezproxy.library.sydney.edu.au/view/velleius_paterculus-compendium_roman_history/1924/pb_LCL152.265.xml and https://www-loebclassics-com.ezproxy.library.sydney.edu.au/view/velleius_paterculus-compendium_roman_history/1924/pb_LCL152.281.xml)
Tacitus, Annals 1.3; 2.39 http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Tacitus/home.htmlLinks to an external site.
Cassius Dio, Roman History 56.30 http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Cassius_Dio/home.htmlLinks to an external site.
Suetonius, Life of Augustus 19; 64-65 http://penelope.uchicago.edu/Thayer/E/Roman/Texts/Suetonius/12Caesars/home.htmlLinks to an external site.
On the ancient sources (you can search in the library for them):
Damon, 2010. “Constructing a narrative” in D. Potter ed. A Companion to the Roman Empire. Oxford (Blackwell’s) pp. 23-34.
Swan, 2004. The Augustan Succession. An Historical Commentary on Cassius Dio’s Roman History Books 55-56 (9 B.C. – A.D. 14). Oxford: 8-35.
Wardle, 2014. Suetonius. Augustus. Oxford. (introduction)