Changes

* Birley, Anthony R. <i>[https://www.amazon.com/gp/product/0415165911/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0415165911&linkCode=as2&tag=dailyh0c-20&linkId=0c2870506161ebf74f258a628ba2aed6 Septimius Severus: The African Emperor]</i> (London: Routledge, 1999)* Campbell, Brian. <i>[https://www.amazon.com/gp/product/0415071739/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0415071739&linkCode=as2&tag=dailyh0c-20&linkId=6d201ae984bb0608353e3eb571f328bb The Roman Army, 31 BC-AD 337: A Sourcebook]</i> (London, Longman, 1997)* Grant, Michael. <i>[https://www.amazon.com/gp/product/0415127726/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0415127726&linkCode=as2&tag=dailyh0c-20&linkId=52f8a4125e2f391fdddeddb02e162abe The Severans: The Changed Roman Empire]</i> (Routledge, London, 1996)* Hekster, Oliver, <i>[https://www.amazon.com/gp/product/0748623043/ref=as_li_tl?ie=UTF8&camp=1789&creative=9325&creativeASIN=0748623043&linkCode=as2&tag=dailyh0c-20&linkId=9ad188f31259f2e53d559c0d52b91aba Rome and its Empire, AD 193–284]</i> (Edinburgh, Archer Press, 2008)