79* Herodian, 4.14–5.4* "Historia Augusta"* Miller, S.N., "The Army and the Imperial House," "The Cambridge Ancient History, Volume XII: The Imperial Crisis and Recovery (A.D. 193–324)", S.A. Cook "et al.
4.14-5.4* Miller, S.N., "The Army and the Imperial House, " The Cambridge Ancient History, Volume XII: The Imperial Crisis and Recovery (A.D. 193—324), S.A. Cook et al.